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PYSEC-2026-3950
Vulnerability from pysec - Published: 2026-08-13 12:17 - Updated: 2026-09-10 12:38GitPython before 3.1.56 contains an argument injection vulnerability in the Commit.count() method, which forwards keyword arguments to 'git rev-list' without the check_unsafe_options guard present in the sibling iter_items method. An attacker who can control options passed to Commit.count (e.g., via an application that forwards a user-supplied options dict) can supply output=, causing 'git rev-list --output=' to open and truncate the target file to zero bytes before revision parsing. This allows destruction/blanking of an arbitrary file at the process's privilege level (no content control, 0-byte truncation).
| Name | purl | gitpython | pkg:pypi/gitpython |
|---|
{
"affected": [
{
"ecosystem_specific": {},
"package": {
"ecosystem": "PyPI",
"name": "gitpython",
"purl": "pkg:pypi/gitpython"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.1.56"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.1.7",
"0.2.0-beta1",
"0.3.0-beta1",
"0.3.0-beta2",
"0.3.1-beta2",
"0.3.2",
"0.3.2.1",
"0.3.2.RC1",
"0.3.3",
"0.3.4",
"0.3.5",
"0.3.6",
"0.3.7",
"1.0.0",
"1.0.1",
"1.0.2",
"2.0.0",
"2.0.1",
"2.0.2",
"2.0.3",
"2.0.4",
"2.0.5",
"2.0.6",
"2.0.7",
"2.0.8",
"2.0.9",
"2.0.9.dev0",
"2.0.9.dev1",
"2.1.0",
"2.1.1",
"2.1.10",
"2.1.11",
"2.1.12",
"2.1.13",
"2.1.14",
"2.1.15",
"2.1.2",
"2.1.3",
"2.1.4",
"2.1.5",
"2.1.6",
"2.1.7",
"2.1.8",
"2.1.9",
"3.0.0",
"3.0.1",
"3.0.2",
"3.0.3",
"3.0.4",
"3.0.5",
"3.0.6",
"3.0.7",
"3.0.8",
"3.0.9",
"3.1.0",
"3.1.1",
"3.1.10",
"3.1.11",
"3.1.12",
"3.1.13",
"3.1.14",
"3.1.15",
"3.1.16",
"3.1.17",
"3.1.18",
"3.1.19",
"3.1.2",
"3.1.20",
"3.1.22",
"3.1.23",
"3.1.24",
"3.1.25",
"3.1.26",
"3.1.27",
"3.1.28",
"3.1.29",
"3.1.3",
"3.1.30",
"3.1.31",
"3.1.32",
"3.1.33",
"3.1.34",
"3.1.35",
"3.1.36",
"3.1.37",
"3.1.38",
"3.1.4",
"3.1.40",
"3.1.41",
"3.1.42",
"3.1.43",
"3.1.44",
"3.1.45",
"3.1.46",
"3.1.47",
"3.1.48",
"3.1.49",
"3.1.5",
"3.1.50",
"3.1.51",
"3.1.52",
"3.1.53",
"3.1.54",
"3.1.55",
"3.1.6",
"3.1.7",
"3.1.8",
"3.1.9"
]
}
],
"aliases": [
"CVE-2026-73621",
"GHSA-p538-c434-8v24"
],
"details": "GitPython before 3.1.56 contains an argument injection vulnerability in the Commit.count() method, which forwards keyword arguments to \u0027git rev-list\u0027 without the check_unsafe_options guard present in the sibling iter_items method. An attacker who can control options passed to Commit.count (e.g., via an application that forwards a user-supplied options dict) can supply output=\u003cpath\u003e, causing \u0027git rev-list --output=\u003cpath\u003e\u0027 to open and truncate the target file to zero bytes before revision parsing. This allows destruction/blanking of an arbitrary file at the process\u0027s privilege level (no content control, 0-byte truncation).",
"id": "PYSEC-2026-3950",
"modified": "2026-09-10T12:38:39.581383Z",
"published": "2026-08-13T12:17:27.200Z",
"references": [
{
"type": "ADVISORY",
"url": "https://www.vulncheck.com/advisories/gitpython-before-arbitrary-file-truncation-via-commit-count"
},
{
"type": "EVIDENCE",
"url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24"
}
],
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
BREW-DVC-CVE-2026-73621 (GHSA-P538-C434-8V24)
Vulnerability from osv_homebrew – Published: 2026-08-14 08:57 – Updated: 2026-09-17 19:47 – Source websiteSummary
Commit.count() forwards **kwargs into rev_list with no check_unsafe_options guard (the guard exists only in the sibling iter_items, commit.py:341). git rev-list --output=<path> opens and truncates the target file to 0 bytes before revision parsing, so count(output='/victim') destroys/blanks an arbitrary file.
Root Cause
commit.py:290-291 calls self.repo.git.rev_list(self.hexsha, **kwargs) with no check_unsafe_options and no allow_unsafe_options parameter. The sibling iter_items (commit.py:341) is guarded; count is not. This is a distinct, uncovered sink — GHSA-956x-8gvw-wg5v fixed iter_commits/blame, not count.
Impact
Destroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (count uses self.hexsha, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.
Proof of Concept
commit.count(output='/path/to/victim') # victim truncated to 0 bytes (verified)
# control: commit.iter_commits(output=...) raises UnsafeOptionError
Attack Chain
- Entry: app forwards user options ->
commit.count(output='/victim'). Guard: none. Bypass proof:iter_commits(output=)raises UnsafeOptionError;count(output=)does not — verified side-by-side. - Sink:
git rev-list <sha> --output=/victim-> file truncated to 0 bytes. Impact: destroy/blank arbitrary file.
Bypass Evidence
Live-verified on HEAD (tag 3.1.53): count(output=<victim>) truncated a pre-existing file to 0 bytes; guarded iter_commits(output=) raised UnsafeOptionError. Same CNA-accepted "app forwards user options dict" model as GHSA-956x-8gvw-wg5v's archive(**kwargs). Uncovered sink, not a duplicate.
Affected Versions
<= 3.1.53
Suggested Fix
Add check_unsafe_options to Commit.count (mirroring iter_items).
Reported by zx (Jace) — GitHub: @manus-use
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "gitpython",
"resource_purl": "pkg:pypi/gitpython@3.1.61",
"upstream_fixed_in": "3.1.56"
},
"package": {
"ecosystem": "Homebrew",
"name": "dvc",
"purl": "pkg:brew/dvc"
},
"ranges": [
{
"events": [
{
"introduced": "1.4.0"
},
{
"fixed": "3.67.1_13"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/gitpython@3.1.61",
"name": "gitpython",
"resource": "gitpython",
"strategy": "registry",
"subject_version": "3.1.61"
}
]
},
"details": "## Summary\n`Commit.count()` forwards `**kwargs` into `rev_list` with **no** `check_unsafe_options` guard (the guard exists only in the sibling `iter_items`, commit.py:341). `git rev-list --output=\u003cpath\u003e` opens and truncates the target file to 0 bytes before revision parsing, so `count(output=\u0027/victim\u0027)` destroys/blanks an arbitrary file.\n\n## Root Cause\n`commit.py:290-291` calls `self.repo.git.rev_list(self.hexsha, **kwargs)` with no `check_unsafe_options` and no `allow_unsafe_options` parameter. The sibling `iter_items` (commit.py:341) is guarded; `count` is not. This is a distinct, uncovered sink \u2014 GHSA-956x-8gvw-wg5v fixed `iter_commits`/`blame`, not `count`.\n\n## Impact\nDestroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (`count` uses `self.hexsha`, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.\n\n## Proof of Concept\n```python\ncommit.count(output=\u0027/path/to/victim\u0027) # victim truncated to 0 bytes (verified)\n# control: commit.iter_commits(output=...) raises UnsafeOptionError\n```\n\n## Attack Chain\n1. Entry: app forwards user options -\u003e `commit.count(output=\u0027/victim\u0027)`. Guard: none. Bypass proof: `iter_commits(output=)` raises UnsafeOptionError; `count(output=)` does not \u2014 verified side-by-side.\n2. Sink: `git rev-list \u003csha\u003e --output=/victim` -\u003e file truncated to 0 bytes. Impact: destroy/blank arbitrary file.\n\n## Bypass Evidence\nLive-verified on HEAD (tag 3.1.53): `count(output=\u003cvictim\u003e)` truncated a pre-existing file to 0 bytes; guarded `iter_commits(output=)` raised UnsafeOptionError. Same CNA-accepted \"app forwards user options dict\" model as GHSA-956x-8gvw-wg5v\u0027s `archive(**kwargs)`. Uncovered sink, not a duplicate.\n\n## Affected Versions\n`\u003c= 3.1.53`\n\n## Suggested Fix\nAdd `check_unsafe_options` to `Commit.count` (mirroring `iter_items`).\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
"id": "BREW-dvc-CVE-2026-73621",
"modified": "2026-09-17T19:47:02Z",
"published": "2026-08-14T08:57:46Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/pull/2184"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/commit/38553b6fddc7f6a667cdb45a6762343a08fc72b2"
},
{
"type": "PACKAGE",
"url": "https://github.com/gitpython-developers/GitPython"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.56"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "GitPython: Arbitrary file truncation via git rev-list --output argument injection in unguarded Commit.count",
"upstream": [
"GHSA-p538-c434-8v24",
"CVE-2026-73621",
"PYSEC-2026-3950"
]
}
BREW-FDROIDSERVER-CVE-20… (GHSA-P538-C434-8V24)
Vulnerability from osv_homebrew – Published: 2026-08-14 08:59 – Updated: 2026-09-10 19:12 – Source websiteSummary
Commit.count() forwards **kwargs into rev_list with no check_unsafe_options guard (the guard exists only in the sibling iter_items, commit.py:341). git rev-list --output=<path> opens and truncates the target file to 0 bytes before revision parsing, so count(output='/victim') destroys/blanks an arbitrary file.
Root Cause
commit.py:290-291 calls self.repo.git.rev_list(self.hexsha, **kwargs) with no check_unsafe_options and no allow_unsafe_options parameter. The sibling iter_items (commit.py:341) is guarded; count is not. This is a distinct, uncovered sink — GHSA-956x-8gvw-wg5v fixed iter_commits/blame, not count.
Impact
Destroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (count uses self.hexsha, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.
Proof of Concept
commit.count(output='/path/to/victim') # victim truncated to 0 bytes (verified)
# control: commit.iter_commits(output=...) raises UnsafeOptionError
Attack Chain
- Entry: app forwards user options ->
commit.count(output='/victim'). Guard: none. Bypass proof:iter_commits(output=)raises UnsafeOptionError;count(output=)does not — verified side-by-side. - Sink:
git rev-list <sha> --output=/victim-> file truncated to 0 bytes. Impact: destroy/blank arbitrary file.
Bypass Evidence
Live-verified on HEAD (tag 3.1.53): count(output=<victim>) truncated a pre-existing file to 0 bytes; guarded iter_commits(output=) raised UnsafeOptionError. Same CNA-accepted "app forwards user options dict" model as GHSA-956x-8gvw-wg5v's archive(**kwargs). Uncovered sink, not a duplicate.
Affected Versions
<= 3.1.53
Suggested Fix
Add check_unsafe_options to Commit.count (mirroring iter_items).
Reported by zx (Jace) — GitHub: @manus-use
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "gitpython",
"resource_purl": "pkg:pypi/gitpython@3.1.61",
"upstream_fixed_in": "3.1.56"
},
"package": {
"ecosystem": "Homebrew",
"name": "fdroidserver",
"purl": "pkg:brew/fdroidserver"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.4.5_4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/gitpython@3.1.61",
"name": "gitpython",
"resource": "gitpython",
"strategy": "registry",
"subject_version": "3.1.61"
}
]
},
"details": "## Summary\n`Commit.count()` forwards `**kwargs` into `rev_list` with **no** `check_unsafe_options` guard (the guard exists only in the sibling `iter_items`, commit.py:341). `git rev-list --output=\u003cpath\u003e` opens and truncates the target file to 0 bytes before revision parsing, so `count(output=\u0027/victim\u0027)` destroys/blanks an arbitrary file.\n\n## Root Cause\n`commit.py:290-291` calls `self.repo.git.rev_list(self.hexsha, **kwargs)` with no `check_unsafe_options` and no `allow_unsafe_options` parameter. The sibling `iter_items` (commit.py:341) is guarded; `count` is not. This is a distinct, uncovered sink \u2014 GHSA-956x-8gvw-wg5v fixed `iter_commits`/`blame`, not `count`.\n\n## Impact\nDestroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (`count` uses `self.hexsha`, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.\n\n## Proof of Concept\n```python\ncommit.count(output=\u0027/path/to/victim\u0027) # victim truncated to 0 bytes (verified)\n# control: commit.iter_commits(output=...) raises UnsafeOptionError\n```\n\n## Attack Chain\n1. Entry: app forwards user options -\u003e `commit.count(output=\u0027/victim\u0027)`. Guard: none. Bypass proof: `iter_commits(output=)` raises UnsafeOptionError; `count(output=)` does not \u2014 verified side-by-side.\n2. Sink: `git rev-list \u003csha\u003e --output=/victim` -\u003e file truncated to 0 bytes. Impact: destroy/blank arbitrary file.\n\n## Bypass Evidence\nLive-verified on HEAD (tag 3.1.53): `count(output=\u003cvictim\u003e)` truncated a pre-existing file to 0 bytes; guarded `iter_commits(output=)` raised UnsafeOptionError. Same CNA-accepted \"app forwards user options dict\" model as GHSA-956x-8gvw-wg5v\u0027s `archive(**kwargs)`. Uncovered sink, not a duplicate.\n\n## Affected Versions\n`\u003c= 3.1.53`\n\n## Suggested Fix\nAdd `check_unsafe_options` to `Commit.count` (mirroring `iter_items`).\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
"id": "BREW-fdroidserver-CVE-2026-73621",
"modified": "2026-09-10T19:12:43Z",
"published": "2026-08-14T08:59:51Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/pull/2184"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/commit/38553b6fddc7f6a667cdb45a6762343a08fc72b2"
},
{
"type": "PACKAGE",
"url": "https://github.com/gitpython-developers/GitPython"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.56"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "GitPython: Arbitrary file truncation via git rev-list --output argument injection in unguarded Commit.count",
"upstream": [
"GHSA-p538-c434-8v24",
"CVE-2026-73621",
"PYSEC-2026-3950"
]
}
BREW-GITUP-CVE-2026-73621 (GHSA-P538-C434-8V24)
Vulnerability from osv_homebrew – Published: 2026-08-14 09:03 – Updated: 2026-09-10 19:18 – Source websiteSummary
Commit.count() forwards **kwargs into rev_list with no check_unsafe_options guard (the guard exists only in the sibling iter_items, commit.py:341). git rev-list --output=<path> opens and truncates the target file to 0 bytes before revision parsing, so count(output='/victim') destroys/blanks an arbitrary file.
Root Cause
commit.py:290-291 calls self.repo.git.rev_list(self.hexsha, **kwargs) with no check_unsafe_options and no allow_unsafe_options parameter. The sibling iter_items (commit.py:341) is guarded; count is not. This is a distinct, uncovered sink — GHSA-956x-8gvw-wg5v fixed iter_commits/blame, not count.
Impact
Destroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (count uses self.hexsha, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.
Proof of Concept
commit.count(output='/path/to/victim') # victim truncated to 0 bytes (verified)
# control: commit.iter_commits(output=...) raises UnsafeOptionError
Attack Chain
- Entry: app forwards user options ->
commit.count(output='/victim'). Guard: none. Bypass proof:iter_commits(output=)raises UnsafeOptionError;count(output=)does not — verified side-by-side. - Sink:
git rev-list <sha> --output=/victim-> file truncated to 0 bytes. Impact: destroy/blank arbitrary file.
Bypass Evidence
Live-verified on HEAD (tag 3.1.53): count(output=<victim>) truncated a pre-existing file to 0 bytes; guarded iter_commits(output=) raised UnsafeOptionError. Same CNA-accepted "app forwards user options dict" model as GHSA-956x-8gvw-wg5v's archive(**kwargs). Uncovered sink, not a duplicate.
Affected Versions
<= 3.1.53
Suggested Fix
Add check_unsafe_options to Commit.count (mirroring iter_items).
Reported by zx (Jace) — GitHub: @manus-use
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "gitpython",
"resource_purl": "pkg:pypi/gitpython@3.1.61",
"upstream_fixed_in": "3.1.56"
},
"package": {
"ecosystem": "Homebrew",
"name": "gitup",
"purl": "pkg:brew/gitup"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.2_6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/gitpython@3.1.61",
"name": "gitpython",
"resource": "gitpython",
"strategy": "registry",
"subject_version": "3.1.61"
}
]
},
"details": "## Summary\n`Commit.count()` forwards `**kwargs` into `rev_list` with **no** `check_unsafe_options` guard (the guard exists only in the sibling `iter_items`, commit.py:341). `git rev-list --output=\u003cpath\u003e` opens and truncates the target file to 0 bytes before revision parsing, so `count(output=\u0027/victim\u0027)` destroys/blanks an arbitrary file.\n\n## Root Cause\n`commit.py:290-291` calls `self.repo.git.rev_list(self.hexsha, **kwargs)` with no `check_unsafe_options` and no `allow_unsafe_options` parameter. The sibling `iter_items` (commit.py:341) is guarded; `count` is not. This is a distinct, uncovered sink \u2014 GHSA-956x-8gvw-wg5v fixed `iter_commits`/`blame`, not `count`.\n\n## Impact\nDestroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (`count` uses `self.hexsha`, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.\n\n## Proof of Concept\n```python\ncommit.count(output=\u0027/path/to/victim\u0027) # victim truncated to 0 bytes (verified)\n# control: commit.iter_commits(output=...) raises UnsafeOptionError\n```\n\n## Attack Chain\n1. Entry: app forwards user options -\u003e `commit.count(output=\u0027/victim\u0027)`. Guard: none. Bypass proof: `iter_commits(output=)` raises UnsafeOptionError; `count(output=)` does not \u2014 verified side-by-side.\n2. Sink: `git rev-list \u003csha\u003e --output=/victim` -\u003e file truncated to 0 bytes. Impact: destroy/blank arbitrary file.\n\n## Bypass Evidence\nLive-verified on HEAD (tag 3.1.53): `count(output=\u003cvictim\u003e)` truncated a pre-existing file to 0 bytes; guarded `iter_commits(output=)` raised UnsafeOptionError. Same CNA-accepted \"app forwards user options dict\" model as GHSA-956x-8gvw-wg5v\u0027s `archive(**kwargs)`. Uncovered sink, not a duplicate.\n\n## Affected Versions\n`\u003c= 3.1.53`\n\n## Suggested Fix\nAdd `check_unsafe_options` to `Commit.count` (mirroring `iter_items`).\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
"id": "BREW-gitup-CVE-2026-73621",
"modified": "2026-09-10T19:18:34Z",
"published": "2026-08-14T09:03:50Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/pull/2184"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/commit/38553b6fddc7f6a667cdb45a6762343a08fc72b2"
},
{
"type": "PACKAGE",
"url": "https://github.com/gitpython-developers/GitPython"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.56"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "GitPython: Arbitrary file truncation via git rev-list --output argument injection in unguarded Commit.count",
"upstream": [
"GHSA-p538-c434-8v24",
"CVE-2026-73621",
"PYSEC-2026-3950"
]
}
BREW-JIRATUI-CVE-2026-73621 (GHSA-P538-C434-8V24)
Vulnerability from osv_homebrew – Published: 2026-08-14 09:11 – Updated: 2026-09-17 18:51 – Source websiteSummary
Commit.count() forwards **kwargs into rev_list with no check_unsafe_options guard (the guard exists only in the sibling iter_items, commit.py:341). git rev-list --output=<path> opens and truncates the target file to 0 bytes before revision parsing, so count(output='/victim') destroys/blanks an arbitrary file.
Root Cause
commit.py:290-291 calls self.repo.git.rev_list(self.hexsha, **kwargs) with no check_unsafe_options and no allow_unsafe_options parameter. The sibling iter_items (commit.py:341) is guarded; count is not. This is a distinct, uncovered sink — GHSA-956x-8gvw-wg5v fixed iter_commits/blame, not count.
Impact
Destroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (count uses self.hexsha, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.
Proof of Concept
commit.count(output='/path/to/victim') # victim truncated to 0 bytes (verified)
# control: commit.iter_commits(output=...) raises UnsafeOptionError
Attack Chain
- Entry: app forwards user options ->
commit.count(output='/victim'). Guard: none. Bypass proof:iter_commits(output=)raises UnsafeOptionError;count(output=)does not — verified side-by-side. - Sink:
git rev-list <sha> --output=/victim-> file truncated to 0 bytes. Impact: destroy/blank arbitrary file.
Bypass Evidence
Live-verified on HEAD (tag 3.1.53): count(output=<victim>) truncated a pre-existing file to 0 bytes; guarded iter_commits(output=) raised UnsafeOptionError. Same CNA-accepted "app forwards user options dict" model as GHSA-956x-8gvw-wg5v's archive(**kwargs). Uncovered sink, not a duplicate.
Affected Versions
<= 3.1.53
Suggested Fix
Add check_unsafe_options to Commit.count (mirroring iter_items).
Reported by zx (Jace) — GitHub: @manus-use
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "gitpython",
"resource_purl": "pkg:pypi/gitpython@3.1.62",
"upstream_fixed_in": "3.1.56"
},
"package": {
"ecosystem": "Homebrew",
"name": "jiratui",
"purl": "pkg:brew/jiratui"
},
"ranges": [
{
"events": [
{
"introduced": "1.3.0"
},
{
"fixed": "1.11.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/gitpython@3.1.62",
"name": "gitpython",
"resource": "gitpython",
"strategy": "registry",
"subject_version": "3.1.62"
}
]
},
"details": "## Summary\n`Commit.count()` forwards `**kwargs` into `rev_list` with **no** `check_unsafe_options` guard (the guard exists only in the sibling `iter_items`, commit.py:341). `git rev-list --output=\u003cpath\u003e` opens and truncates the target file to 0 bytes before revision parsing, so `count(output=\u0027/victim\u0027)` destroys/blanks an arbitrary file.\n\n## Root Cause\n`commit.py:290-291` calls `self.repo.git.rev_list(self.hexsha, **kwargs)` with no `check_unsafe_options` and no `allow_unsafe_options` parameter. The sibling `iter_items` (commit.py:341) is guarded; `count` is not. This is a distinct, uncovered sink \u2014 GHSA-956x-8gvw-wg5v fixed `iter_commits`/`blame`, not `count`.\n\n## Impact\nDestroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (`count` uses `self.hexsha`, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.\n\n## Proof of Concept\n```python\ncommit.count(output=\u0027/path/to/victim\u0027) # victim truncated to 0 bytes (verified)\n# control: commit.iter_commits(output=...) raises UnsafeOptionError\n```\n\n## Attack Chain\n1. Entry: app forwards user options -\u003e `commit.count(output=\u0027/victim\u0027)`. Guard: none. Bypass proof: `iter_commits(output=)` raises UnsafeOptionError; `count(output=)` does not \u2014 verified side-by-side.\n2. Sink: `git rev-list \u003csha\u003e --output=/victim` -\u003e file truncated to 0 bytes. Impact: destroy/blank arbitrary file.\n\n## Bypass Evidence\nLive-verified on HEAD (tag 3.1.53): `count(output=\u003cvictim\u003e)` truncated a pre-existing file to 0 bytes; guarded `iter_commits(output=)` raised UnsafeOptionError. Same CNA-accepted \"app forwards user options dict\" model as GHSA-956x-8gvw-wg5v\u0027s `archive(**kwargs)`. Uncovered sink, not a duplicate.\n\n## Affected Versions\n`\u003c= 3.1.53`\n\n## Suggested Fix\nAdd `check_unsafe_options` to `Commit.count` (mirroring `iter_items`).\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
"id": "BREW-jiratui-CVE-2026-73621",
"modified": "2026-09-17T18:51:24Z",
"published": "2026-08-14T09:11:35Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/pull/2184"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/commit/38553b6fddc7f6a667cdb45a6762343a08fc72b2"
},
{
"type": "PACKAGE",
"url": "https://github.com/gitpython-developers/GitPython"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.56"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "GitPython: Arbitrary file truncation via git rev-list --output argument injection in unguarded Commit.count",
"upstream": [
"GHSA-p538-c434-8v24",
"CVE-2026-73621",
"PYSEC-2026-3950"
]
}
BREW-KIMI-CLI-CVE-2026-73621 (GHSA-P538-C434-8V24)
Vulnerability from osv_homebrew – Published: 2026-08-14 09:12 – Updated: 2026-09-10 19:38 – Source websiteSummary
Commit.count() forwards **kwargs into rev_list with no check_unsafe_options guard (the guard exists only in the sibling iter_items, commit.py:341). git rev-list --output=<path> opens and truncates the target file to 0 bytes before revision parsing, so count(output='/victim') destroys/blanks an arbitrary file.
Root Cause
commit.py:290-291 calls self.repo.git.rev_list(self.hexsha, **kwargs) with no check_unsafe_options and no allow_unsafe_options parameter. The sibling iter_items (commit.py:341) is guarded; count is not. This is a distinct, uncovered sink — GHSA-956x-8gvw-wg5v fixed iter_commits/blame, not count.
Impact
Destroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (count uses self.hexsha, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.
Proof of Concept
commit.count(output='/path/to/victim') # victim truncated to 0 bytes (verified)
# control: commit.iter_commits(output=...) raises UnsafeOptionError
Attack Chain
- Entry: app forwards user options ->
commit.count(output='/victim'). Guard: none. Bypass proof:iter_commits(output=)raises UnsafeOptionError;count(output=)does not — verified side-by-side. - Sink:
git rev-list <sha> --output=/victim-> file truncated to 0 bytes. Impact: destroy/blank arbitrary file.
Bypass Evidence
Live-verified on HEAD (tag 3.1.53): count(output=<victim>) truncated a pre-existing file to 0 bytes; guarded iter_commits(output=) raised UnsafeOptionError. Same CNA-accepted "app forwards user options dict" model as GHSA-956x-8gvw-wg5v's archive(**kwargs). Uncovered sink, not a duplicate.
Affected Versions
<= 3.1.53
Suggested Fix
Add check_unsafe_options to Commit.count (mirroring iter_items).
Reported by zx (Jace) — GitHub: @manus-use
{
"affected": [
{
"ecosystem_specific": {
"fix": null,
"range_state": "affected",
"resource": "gitpython",
"resource_purl": "pkg:pypi/gitpython@3.1.52",
"upstream_fixed_in": "3.1.56"
},
"package": {
"ecosystem": "Homebrew",
"name": "kimi-cli",
"purl": "pkg:brew/kimi-cli"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/gitpython@3.1.52",
"name": "gitpython",
"resource": "gitpython",
"strategy": "registry",
"subject_version": "3.1.52"
}
]
},
"details": "## Summary\n`Commit.count()` forwards `**kwargs` into `rev_list` with **no** `check_unsafe_options` guard (the guard exists only in the sibling `iter_items`, commit.py:341). `git rev-list --output=\u003cpath\u003e` opens and truncates the target file to 0 bytes before revision parsing, so `count(output=\u0027/victim\u0027)` destroys/blanks an arbitrary file.\n\n## Root Cause\n`commit.py:290-291` calls `self.repo.git.rev_list(self.hexsha, **kwargs)` with no `check_unsafe_options` and no `allow_unsafe_options` parameter. The sibling `iter_items` (commit.py:341) is guarded; `count` is not. This is a distinct, uncovered sink \u2014 GHSA-956x-8gvw-wg5v fixed `iter_commits`/`blame`, not `count`.\n\n## Impact\nDestroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (`count` uses `self.hexsha`, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.\n\n## Proof of Concept\n```python\ncommit.count(output=\u0027/path/to/victim\u0027) # victim truncated to 0 bytes (verified)\n# control: commit.iter_commits(output=...) raises UnsafeOptionError\n```\n\n## Attack Chain\n1. Entry: app forwards user options -\u003e `commit.count(output=\u0027/victim\u0027)`. Guard: none. Bypass proof: `iter_commits(output=)` raises UnsafeOptionError; `count(output=)` does not \u2014 verified side-by-side.\n2. Sink: `git rev-list \u003csha\u003e --output=/victim` -\u003e file truncated to 0 bytes. Impact: destroy/blank arbitrary file.\n\n## Bypass Evidence\nLive-verified on HEAD (tag 3.1.53): `count(output=\u003cvictim\u003e)` truncated a pre-existing file to 0 bytes; guarded `iter_commits(output=)` raised UnsafeOptionError. Same CNA-accepted \"app forwards user options dict\" model as GHSA-956x-8gvw-wg5v\u0027s `archive(**kwargs)`. Uncovered sink, not a duplicate.\n\n## Affected Versions\n`\u003c= 3.1.53`\n\n## Suggested Fix\nAdd `check_unsafe_options` to `Commit.count` (mirroring `iter_items`).\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
"id": "BREW-kimi-cli-CVE-2026-73621",
"modified": "2026-09-10T19:38:55Z",
"published": "2026-08-14T09:12:07Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/pull/2184"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/commit/38553b6fddc7f6a667cdb45a6762343a08fc72b2"
},
{
"type": "PACKAGE",
"url": "https://github.com/gitpython-developers/GitPython"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.56"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "GitPython: Arbitrary file truncation via git rev-list --output argument injection in unguarded Commit.count",
"upstream": [
"GHSA-p538-c434-8v24",
"CVE-2026-73621",
"PYSEC-2026-3950"
]
}
BREW-LEGIT-CVE-2026-73621 (GHSA-P538-C434-8V24)
Vulnerability from osv_homebrew – Published: 2026-08-14 09:13 – Updated: 2026-09-10 19:41 – Source websiteSummary
Commit.count() forwards **kwargs into rev_list with no check_unsafe_options guard (the guard exists only in the sibling iter_items, commit.py:341). git rev-list --output=<path> opens and truncates the target file to 0 bytes before revision parsing, so count(output='/victim') destroys/blanks an arbitrary file.
Root Cause
commit.py:290-291 calls self.repo.git.rev_list(self.hexsha, **kwargs) with no check_unsafe_options and no allow_unsafe_options parameter. The sibling iter_items (commit.py:341) is guarded; count is not. This is a distinct, uncovered sink — GHSA-956x-8gvw-wg5v fixed iter_commits/blame, not count.
Impact
Destroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (count uses self.hexsha, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.
Proof of Concept
commit.count(output='/path/to/victim') # victim truncated to 0 bytes (verified)
# control: commit.iter_commits(output=...) raises UnsafeOptionError
Attack Chain
- Entry: app forwards user options ->
commit.count(output='/victim'). Guard: none. Bypass proof:iter_commits(output=)raises UnsafeOptionError;count(output=)does not — verified side-by-side. - Sink:
git rev-list <sha> --output=/victim-> file truncated to 0 bytes. Impact: destroy/blank arbitrary file.
Bypass Evidence
Live-verified on HEAD (tag 3.1.53): count(output=<victim>) truncated a pre-existing file to 0 bytes; guarded iter_commits(output=) raised UnsafeOptionError. Same CNA-accepted "app forwards user options dict" model as GHSA-956x-8gvw-wg5v's archive(**kwargs). Uncovered sink, not a duplicate.
Affected Versions
<= 3.1.53
Suggested Fix
Add check_unsafe_options to Commit.count (mirroring iter_items).
Reported by zx (Jace) — GitHub: @manus-use
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "gitpython",
"resource_purl": "pkg:pypi/gitpython@3.1.61",
"upstream_fixed_in": "3.1.56"
},
"package": {
"ecosystem": "Homebrew",
"name": "legit",
"purl": "pkg:brew/legit"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.0.post0_14"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/gitpython@3.1.61",
"name": "gitpython",
"resource": "gitpython",
"strategy": "registry",
"subject_version": "3.1.61"
}
]
},
"details": "## Summary\n`Commit.count()` forwards `**kwargs` into `rev_list` with **no** `check_unsafe_options` guard (the guard exists only in the sibling `iter_items`, commit.py:341). `git rev-list --output=\u003cpath\u003e` opens and truncates the target file to 0 bytes before revision parsing, so `count(output=\u0027/victim\u0027)` destroys/blanks an arbitrary file.\n\n## Root Cause\n`commit.py:290-291` calls `self.repo.git.rev_list(self.hexsha, **kwargs)` with no `check_unsafe_options` and no `allow_unsafe_options` parameter. The sibling `iter_items` (commit.py:341) is guarded; `count` is not. This is a distinct, uncovered sink \u2014 GHSA-956x-8gvw-wg5v fixed `iter_commits`/`blame`, not `count`.\n\n## Impact\nDestroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (`count` uses `self.hexsha`, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.\n\n## Proof of Concept\n```python\ncommit.count(output=\u0027/path/to/victim\u0027) # victim truncated to 0 bytes (verified)\n# control: commit.iter_commits(output=...) raises UnsafeOptionError\n```\n\n## Attack Chain\n1. Entry: app forwards user options -\u003e `commit.count(output=\u0027/victim\u0027)`. Guard: none. Bypass proof: `iter_commits(output=)` raises UnsafeOptionError; `count(output=)` does not \u2014 verified side-by-side.\n2. Sink: `git rev-list \u003csha\u003e --output=/victim` -\u003e file truncated to 0 bytes. Impact: destroy/blank arbitrary file.\n\n## Bypass Evidence\nLive-verified on HEAD (tag 3.1.53): `count(output=\u003cvictim\u003e)` truncated a pre-existing file to 0 bytes; guarded `iter_commits(output=)` raised UnsafeOptionError. Same CNA-accepted \"app forwards user options dict\" model as GHSA-956x-8gvw-wg5v\u0027s `archive(**kwargs)`. Uncovered sink, not a duplicate.\n\n## Affected Versions\n`\u003c= 3.1.53`\n\n## Suggested Fix\nAdd `check_unsafe_options` to `Commit.count` (mirroring `iter_items`).\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
"id": "BREW-legit-CVE-2026-73621",
"modified": "2026-09-10T19:41:30Z",
"published": "2026-08-14T09:13:01Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/pull/2184"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/commit/38553b6fddc7f6a667cdb45a6762343a08fc72b2"
},
{
"type": "PACKAGE",
"url": "https://github.com/gitpython-developers/GitPython"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.56"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "GitPython: Arbitrary file truncation via git rev-list --output argument injection in unguarded Commit.count",
"upstream": [
"GHSA-p538-c434-8v24",
"CVE-2026-73621",
"PYSEC-2026-3950"
]
}
BREW-MENTAT-CVE-2026-73621 (GHSA-P538-C434-8V24)
Vulnerability from osv_homebrew – Published: 2026-08-14 09:21 – Updated: 2026-09-11 16:24 – Source websiteSummary
Commit.count() forwards **kwargs into rev_list with no check_unsafe_options guard (the guard exists only in the sibling iter_items, commit.py:341). git rev-list --output=<path> opens and truncates the target file to 0 bytes before revision parsing, so count(output='/victim') destroys/blanks an arbitrary file.
Root Cause
commit.py:290-291 calls self.repo.git.rev_list(self.hexsha, **kwargs) with no check_unsafe_options and no allow_unsafe_options parameter. The sibling iter_items (commit.py:341) is guarded; count is not. This is a distinct, uncovered sink — GHSA-956x-8gvw-wg5v fixed iter_commits/blame, not count.
Impact
Destroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (count uses self.hexsha, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.
Proof of Concept
commit.count(output='/path/to/victim') # victim truncated to 0 bytes (verified)
# control: commit.iter_commits(output=...) raises UnsafeOptionError
Attack Chain
- Entry: app forwards user options ->
commit.count(output='/victim'). Guard: none. Bypass proof:iter_commits(output=)raises UnsafeOptionError;count(output=)does not — verified side-by-side. - Sink:
git rev-list <sha> --output=/victim-> file truncated to 0 bytes. Impact: destroy/blank arbitrary file.
Bypass Evidence
Live-verified on HEAD (tag 3.1.53): count(output=<victim>) truncated a pre-existing file to 0 bytes; guarded iter_commits(output=) raised UnsafeOptionError. Same CNA-accepted "app forwards user options dict" model as GHSA-956x-8gvw-wg5v's archive(**kwargs). Uncovered sink, not a duplicate.
Affected Versions
<= 3.1.53
Suggested Fix
Add check_unsafe_options to Commit.count (mirroring iter_items).
Reported by zx (Jace) — GitHub: @manus-use
{
"affected": [
{
"ecosystem_specific": {
"fix": null,
"range_state": "affected",
"resource": "gitpython",
"resource_purl": "pkg:pypi/gitpython@3.1.37",
"upstream_fixed_in": "3.1.56"
},
"package": {
"ecosystem": "Homebrew",
"name": "mentat",
"purl": "pkg:brew/mentat"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/gitpython@3.1.37",
"name": "gitpython",
"resource": "gitpython",
"strategy": "registry",
"subject_version": "3.1.37"
}
]
},
"details": "## Summary\n`Commit.count()` forwards `**kwargs` into `rev_list` with **no** `check_unsafe_options` guard (the guard exists only in the sibling `iter_items`, commit.py:341). `git rev-list --output=\u003cpath\u003e` opens and truncates the target file to 0 bytes before revision parsing, so `count(output=\u0027/victim\u0027)` destroys/blanks an arbitrary file.\n\n## Root Cause\n`commit.py:290-291` calls `self.repo.git.rev_list(self.hexsha, **kwargs)` with no `check_unsafe_options` and no `allow_unsafe_options` parameter. The sibling `iter_items` (commit.py:341) is guarded; `count` is not. This is a distinct, uncovered sink \u2014 GHSA-956x-8gvw-wg5v fixed `iter_commits`/`blame`, not `count`.\n\n## Impact\nDestroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (`count` uses `self.hexsha`, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.\n\n## Proof of Concept\n```python\ncommit.count(output=\u0027/path/to/victim\u0027) # victim truncated to 0 bytes (verified)\n# control: commit.iter_commits(output=...) raises UnsafeOptionError\n```\n\n## Attack Chain\n1. Entry: app forwards user options -\u003e `commit.count(output=\u0027/victim\u0027)`. Guard: none. Bypass proof: `iter_commits(output=)` raises UnsafeOptionError; `count(output=)` does not \u2014 verified side-by-side.\n2. Sink: `git rev-list \u003csha\u003e --output=/victim` -\u003e file truncated to 0 bytes. Impact: destroy/blank arbitrary file.\n\n## Bypass Evidence\nLive-verified on HEAD (tag 3.1.53): `count(output=\u003cvictim\u003e)` truncated a pre-existing file to 0 bytes; guarded `iter_commits(output=)` raised UnsafeOptionError. Same CNA-accepted \"app forwards user options dict\" model as GHSA-956x-8gvw-wg5v\u0027s `archive(**kwargs)`. Uncovered sink, not a duplicate.\n\n## Affected Versions\n`\u003c= 3.1.53`\n\n## Suggested Fix\nAdd `check_unsafe_options` to `Commit.count` (mirroring `iter_items`).\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
"id": "BREW-mentat-CVE-2026-73621",
"modified": "2026-09-11T16:24:24Z",
"published": "2026-08-14T09:21:21Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/pull/2184"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/commit/38553b6fddc7f6a667cdb45a6762343a08fc72b2"
},
{
"type": "PACKAGE",
"url": "https://github.com/gitpython-developers/GitPython"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.56"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "GitPython: Arbitrary file truncation via git rev-list --output argument injection in unguarded Commit.count",
"upstream": [
"GHSA-p538-c434-8v24",
"CVE-2026-73621",
"PYSEC-2026-3950"
]
}
BREW-MISTRAL-VIBE-CVE-20… (GHSA-P538-C434-8V24)
Vulnerability from osv_homebrew – Published: 2026-08-14 09:22 – Updated: 2026-09-17 19:14 – Source websiteSummary
Commit.count() forwards **kwargs into rev_list with no check_unsafe_options guard (the guard exists only in the sibling iter_items, commit.py:341). git rev-list --output=<path> opens and truncates the target file to 0 bytes before revision parsing, so count(output='/victim') destroys/blanks an arbitrary file.
Root Cause
commit.py:290-291 calls self.repo.git.rev_list(self.hexsha, **kwargs) with no check_unsafe_options and no allow_unsafe_options parameter. The sibling iter_items (commit.py:341) is guarded; count is not. This is a distinct, uncovered sink — GHSA-956x-8gvw-wg5v fixed iter_commits/blame, not count.
Impact
Destroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (count uses self.hexsha, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.
Proof of Concept
commit.count(output='/path/to/victim') # victim truncated to 0 bytes (verified)
# control: commit.iter_commits(output=...) raises UnsafeOptionError
Attack Chain
- Entry: app forwards user options ->
commit.count(output='/victim'). Guard: none. Bypass proof:iter_commits(output=)raises UnsafeOptionError;count(output=)does not — verified side-by-side. - Sink:
git rev-list <sha> --output=/victim-> file truncated to 0 bytes. Impact: destroy/blank arbitrary file.
Bypass Evidence
Live-verified on HEAD (tag 3.1.53): count(output=<victim>) truncated a pre-existing file to 0 bytes; guarded iter_commits(output=) raised UnsafeOptionError. Same CNA-accepted "app forwards user options dict" model as GHSA-956x-8gvw-wg5v's archive(**kwargs). Uncovered sink, not a duplicate.
Affected Versions
<= 3.1.53
Suggested Fix
Add check_unsafe_options to Commit.count (mirroring iter_items).
Reported by zx (Jace) — GitHub: @manus-use
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "gitpython",
"resource_purl": "pkg:pypi/gitpython@3.1.58",
"upstream_fixed_in": "3.1.56"
},
"package": {
"ecosystem": "Homebrew",
"name": "mistral-vibe",
"purl": "pkg:brew/mistral-vibe"
},
"ranges": [
{
"events": [
{
"introduced": "2.1.0"
},
{
"fixed": "2.24.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/gitpython@3.1.58",
"name": "gitpython",
"resource": "gitpython",
"strategy": "registry",
"subject_version": "3.1.58"
}
]
},
"details": "## Summary\n`Commit.count()` forwards `**kwargs` into `rev_list` with **no** `check_unsafe_options` guard (the guard exists only in the sibling `iter_items`, commit.py:341). `git rev-list --output=\u003cpath\u003e` opens and truncates the target file to 0 bytes before revision parsing, so `count(output=\u0027/victim\u0027)` destroys/blanks an arbitrary file.\n\n## Root Cause\n`commit.py:290-291` calls `self.repo.git.rev_list(self.hexsha, **kwargs)` with no `check_unsafe_options` and no `allow_unsafe_options` parameter. The sibling `iter_items` (commit.py:341) is guarded; `count` is not. This is a distinct, uncovered sink \u2014 GHSA-956x-8gvw-wg5v fixed `iter_commits`/`blame`, not `count`.\n\n## Impact\nDestroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (`count` uses `self.hexsha`, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.\n\n## Proof of Concept\n```python\ncommit.count(output=\u0027/path/to/victim\u0027) # victim truncated to 0 bytes (verified)\n# control: commit.iter_commits(output=...) raises UnsafeOptionError\n```\n\n## Attack Chain\n1. Entry: app forwards user options -\u003e `commit.count(output=\u0027/victim\u0027)`. Guard: none. Bypass proof: `iter_commits(output=)` raises UnsafeOptionError; `count(output=)` does not \u2014 verified side-by-side.\n2. Sink: `git rev-list \u003csha\u003e --output=/victim` -\u003e file truncated to 0 bytes. Impact: destroy/blank arbitrary file.\n\n## Bypass Evidence\nLive-verified on HEAD (tag 3.1.53): `count(output=\u003cvictim\u003e)` truncated a pre-existing file to 0 bytes; guarded `iter_commits(output=)` raised UnsafeOptionError. Same CNA-accepted \"app forwards user options dict\" model as GHSA-956x-8gvw-wg5v\u0027s `archive(**kwargs)`. Uncovered sink, not a duplicate.\n\n## Affected Versions\n`\u003c= 3.1.53`\n\n## Suggested Fix\nAdd `check_unsafe_options` to `Commit.count` (mirroring `iter_items`).\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
"id": "BREW-mistral-vibe-CVE-2026-73621",
"modified": "2026-09-17T19:14:51Z",
"published": "2026-08-14T09:22:15Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/pull/2184"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/commit/38553b6fddc7f6a667cdb45a6762343a08fc72b2"
},
{
"type": "PACKAGE",
"url": "https://github.com/gitpython-developers/GitPython"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.56"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "GitPython: Arbitrary file truncation via git rev-list --output argument injection in unguarded Commit.count",
"upstream": [
"GHSA-p538-c434-8v24",
"CVE-2026-73621",
"PYSEC-2026-3950"
]
}
BREW-MK-CVE-2026-73621 (GHSA-P538-C434-8V24)
Vulnerability from osv_homebrew – Published: 2026-08-14 09:22 – Updated: 2026-09-17 17:54 – Source websiteSummary
Commit.count() forwards **kwargs into rev_list with no check_unsafe_options guard (the guard exists only in the sibling iter_items, commit.py:341). git rev-list --output=<path> opens and truncates the target file to 0 bytes before revision parsing, so count(output='/victim') destroys/blanks an arbitrary file.
Root Cause
commit.py:290-291 calls self.repo.git.rev_list(self.hexsha, **kwargs) with no check_unsafe_options and no allow_unsafe_options parameter. The sibling iter_items (commit.py:341) is guarded; count is not. This is a distinct, uncovered sink — GHSA-956x-8gvw-wg5v fixed iter_commits/blame, not count.
Impact
Destroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (count uses self.hexsha, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.
Proof of Concept
commit.count(output='/path/to/victim') # victim truncated to 0 bytes (verified)
# control: commit.iter_commits(output=...) raises UnsafeOptionError
Attack Chain
- Entry: app forwards user options ->
commit.count(output='/victim'). Guard: none. Bypass proof:iter_commits(output=)raises UnsafeOptionError;count(output=)does not — verified side-by-side. - Sink:
git rev-list <sha> --output=/victim-> file truncated to 0 bytes. Impact: destroy/blank arbitrary file.
Bypass Evidence
Live-verified on HEAD (tag 3.1.53): count(output=<victim>) truncated a pre-existing file to 0 bytes; guarded iter_commits(output=) raised UnsafeOptionError. Same CNA-accepted "app forwards user options dict" model as GHSA-956x-8gvw-wg5v's archive(**kwargs). Uncovered sink, not a duplicate.
Affected Versions
<= 3.1.53
Suggested Fix
Add check_unsafe_options to Commit.count (mirroring iter_items).
Reported by zx (Jace) — GitHub: @manus-use
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "gitpython",
"resource_purl": "pkg:pypi/gitpython@3.1.61",
"upstream_fixed_in": "3.1.56"
},
"package": {
"ecosystem": "Homebrew",
"name": "mk",
"purl": "pkg:brew/mk"
},
"ranges": [
{
"events": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.0.0_12"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/gitpython@3.1.61",
"name": "gitpython",
"resource": "gitpython",
"strategy": "registry",
"subject_version": "3.1.61"
}
]
},
"details": "## Summary\n`Commit.count()` forwards `**kwargs` into `rev_list` with **no** `check_unsafe_options` guard (the guard exists only in the sibling `iter_items`, commit.py:341). `git rev-list --output=\u003cpath\u003e` opens and truncates the target file to 0 bytes before revision parsing, so `count(output=\u0027/victim\u0027)` destroys/blanks an arbitrary file.\n\n## Root Cause\n`commit.py:290-291` calls `self.repo.git.rev_list(self.hexsha, **kwargs)` with no `check_unsafe_options` and no `allow_unsafe_options` parameter. The sibling `iter_items` (commit.py:341) is guarded; `count` is not. This is a distinct, uncovered sink \u2014 GHSA-956x-8gvw-wg5v fixed `iter_commits`/`blame`, not `count`.\n\n## Impact\nDestroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (`count` uses `self.hexsha`, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.\n\n## Proof of Concept\n```python\ncommit.count(output=\u0027/path/to/victim\u0027) # victim truncated to 0 bytes (verified)\n# control: commit.iter_commits(output=...) raises UnsafeOptionError\n```\n\n## Attack Chain\n1. Entry: app forwards user options -\u003e `commit.count(output=\u0027/victim\u0027)`. Guard: none. Bypass proof: `iter_commits(output=)` raises UnsafeOptionError; `count(output=)` does not \u2014 verified side-by-side.\n2. Sink: `git rev-list \u003csha\u003e --output=/victim` -\u003e file truncated to 0 bytes. Impact: destroy/blank arbitrary file.\n\n## Bypass Evidence\nLive-verified on HEAD (tag 3.1.53): `count(output=\u003cvictim\u003e)` truncated a pre-existing file to 0 bytes; guarded `iter_commits(output=)` raised UnsafeOptionError. Same CNA-accepted \"app forwards user options dict\" model as GHSA-956x-8gvw-wg5v\u0027s `archive(**kwargs)`. Uncovered sink, not a duplicate.\n\n## Affected Versions\n`\u003c= 3.1.53`\n\n## Suggested Fix\nAdd `check_unsafe_options` to `Commit.count` (mirroring `iter_items`).\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
"id": "BREW-mk-CVE-2026-73621",
"modified": "2026-09-17T17:54:45Z",
"published": "2026-08-14T09:22:15Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/pull/2184"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/commit/38553b6fddc7f6a667cdb45a6762343a08fc72b2"
},
{
"type": "PACKAGE",
"url": "https://github.com/gitpython-developers/GitPython"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.56"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "GitPython: Arbitrary file truncation via git rev-list --output argument injection in unguarded Commit.count",
"upstream": [
"GHSA-p538-c434-8v24",
"CVE-2026-73621",
"PYSEC-2026-3950"
]
}
BREW-NBDIME-CVE-2026-73621 (GHSA-P538-C434-8V24)
Vulnerability from osv_homebrew – Published: 2026-08-14 09:24 – Updated: 2026-09-17 19:30 – Source websiteSummary
Commit.count() forwards **kwargs into rev_list with no check_unsafe_options guard (the guard exists only in the sibling iter_items, commit.py:341). git rev-list --output=<path> opens and truncates the target file to 0 bytes before revision parsing, so count(output='/victim') destroys/blanks an arbitrary file.
Root Cause
commit.py:290-291 calls self.repo.git.rev_list(self.hexsha, **kwargs) with no check_unsafe_options and no allow_unsafe_options parameter. The sibling iter_items (commit.py:341) is guarded; count is not. This is a distinct, uncovered sink — GHSA-956x-8gvw-wg5v fixed iter_commits/blame, not count.
Impact
Destroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (count uses self.hexsha, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.
Proof of Concept
commit.count(output='/path/to/victim') # victim truncated to 0 bytes (verified)
# control: commit.iter_commits(output=...) raises UnsafeOptionError
Attack Chain
- Entry: app forwards user options ->
commit.count(output='/victim'). Guard: none. Bypass proof:iter_commits(output=)raises UnsafeOptionError;count(output=)does not — verified side-by-side. - Sink:
git rev-list <sha> --output=/victim-> file truncated to 0 bytes. Impact: destroy/blank arbitrary file.
Bypass Evidence
Live-verified on HEAD (tag 3.1.53): count(output=<victim>) truncated a pre-existing file to 0 bytes; guarded iter_commits(output=) raised UnsafeOptionError. Same CNA-accepted "app forwards user options dict" model as GHSA-956x-8gvw-wg5v's archive(**kwargs). Uncovered sink, not a duplicate.
Affected Versions
<= 3.1.53
Suggested Fix
Add check_unsafe_options to Commit.count (mirroring iter_items).
Reported by zx (Jace) — GitHub: @manus-use
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "gitpython",
"resource_purl": "pkg:pypi/gitpython@3.1.61",
"upstream_fixed_in": "3.1.56"
},
"package": {
"ecosystem": "Homebrew",
"name": "nbdime",
"purl": "pkg:brew/nbdime"
},
"ranges": [
{
"events": [
{
"introduced": "1.1.0"
},
{
"fixed": "4.0.4_6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/gitpython@3.1.61",
"name": "gitpython",
"resource": "gitpython",
"strategy": "registry",
"subject_version": "3.1.61"
}
]
},
"details": "## Summary\n`Commit.count()` forwards `**kwargs` into `rev_list` with **no** `check_unsafe_options` guard (the guard exists only in the sibling `iter_items`, commit.py:341). `git rev-list --output=\u003cpath\u003e` opens and truncates the target file to 0 bytes before revision parsing, so `count(output=\u0027/victim\u0027)` destroys/blanks an arbitrary file.\n\n## Root Cause\n`commit.py:290-291` calls `self.repo.git.rev_list(self.hexsha, **kwargs)` with no `check_unsafe_options` and no `allow_unsafe_options` parameter. The sibling `iter_items` (commit.py:341) is guarded; `count` is not. This is a distinct, uncovered sink \u2014 GHSA-956x-8gvw-wg5v fixed `iter_commits`/`blame`, not `count`.\n\n## Impact\nDestroy/blank an arbitrary file at process privilege (integrity/availability). Reachability is key-control only (`count` uses `self.hexsha`, not a user ref), and the write is a 0-byte truncation (no content control), so MEDIUM.\n\n## Proof of Concept\n```python\ncommit.count(output=\u0027/path/to/victim\u0027) # victim truncated to 0 bytes (verified)\n# control: commit.iter_commits(output=...) raises UnsafeOptionError\n```\n\n## Attack Chain\n1. Entry: app forwards user options -\u003e `commit.count(output=\u0027/victim\u0027)`. Guard: none. Bypass proof: `iter_commits(output=)` raises UnsafeOptionError; `count(output=)` does not \u2014 verified side-by-side.\n2. Sink: `git rev-list \u003csha\u003e --output=/victim` -\u003e file truncated to 0 bytes. Impact: destroy/blank arbitrary file.\n\n## Bypass Evidence\nLive-verified on HEAD (tag 3.1.53): `count(output=\u003cvictim\u003e)` truncated a pre-existing file to 0 bytes; guarded `iter_commits(output=)` raised UnsafeOptionError. Same CNA-accepted \"app forwards user options dict\" model as GHSA-956x-8gvw-wg5v\u0027s `archive(**kwargs)`. Uncovered sink, not a duplicate.\n\n## Affected Versions\n`\u003c= 3.1.53`\n\n## Suggested Fix\nAdd `check_unsafe_options` to `Commit.count` (mirroring `iter_items`).\n\n---\nReported by **zx (Jace)** \u2014 GitHub: @manus-use",
"id": "BREW-nbdime-CVE-2026-73621",
"modified": "2026-09-17T19:30:00Z",
"published": "2026-08-14T09:24:54Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-p538-c434-8v24"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/pull/2184"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/commit/38553b6fddc7f6a667cdb45a6762343a08fc72b2"
},
{
"type": "PACKAGE",
"url": "https://github.com/gitpython-developers/GitPython"
},
{
"type": "WEB",
"url": "https://github.com/gitpython-developers/GitPython/releases/tag/3.1.56"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "GitPython: Arbitrary file truncation via git rev-list --output argument injection in unguarded Commit.count",
"upstream": [
"GHSA-p538-c434-8v24",
"CVE-2026-73621",
"PYSEC-2026-3950"
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.