UBUNTU-CVE-2026-102925 (CVE-2026-102925)
Vulnerability from osv_ubuntu – Published: 2026-09-29 21:17 – Updated: 2026-09-29 21:17 – Source website
VLAI
Details
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.13, the generated activate (bash and zsh) and activate.fish scripts place values already escaped by shlex.quote inside an additional quoted context. In the bash and zsh script, a crafted virtual environment path reaches VIRTUAL_ENV when a relocated environment's recorded directory is absent; in the fish script, crafted Tcl or Tk library paths reach TCL_LIBRARY or TK_LIBRARY. The surplus quotes can terminate the data-only quoted run and leave shell metacharacters parsed as commands when a user sources the activation script, allowing code execution with that user's privileges. This issue is fixed in version 21.7.13.
Severity
7.8 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python-virtualenv",
"binary_version": "1.11.4-1ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "python-virtualenv",
"purl": "pkg:deb/ubuntu/python-virtualenv@1.11.4-1ubuntu1?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.10.1-1",
"1.11-1",
"1.11-2",
"1.11.4-1",
"1.11.4-1ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python-virtualenv",
"binary_version": "15.0.1+ds-3ubuntu1.1"
},
{
"binary_name": "python3-virtualenv",
"binary_version": "15.0.1+ds-3ubuntu1.1"
},
{
"binary_name": "virtualenv",
"binary_version": "15.0.1+ds-3ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "python-virtualenv",
"purl": "pkg:deb/ubuntu/python-virtualenv@15.0.1+ds-3ubuntu1.1?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.11.6+ds-1",
"14.0.5+ds-1",
"14.0.5+ds-2",
"14.0.5+ds-4",
"15.0.0+ds-1",
"15.0.0+ds-2",
"15.0.1+ds-1",
"15.0.1+ds-2",
"15.0.1+ds-3",
"15.0.1+ds-3ubuntu1",
"15.0.1+ds-3ubuntu1.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python-virtualenv",
"binary_version": "15.1.0+ds-1.1"
},
{
"binary_name": "python3-virtualenv",
"binary_version": "15.1.0+ds-1.1"
},
{
"binary_name": "virtualenv",
"binary_version": "15.1.0+ds-1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "python-virtualenv",
"purl": "pkg:deb/ubuntu/python-virtualenv@15.1.0+ds-1.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"15.1.0+ds-1",
"15.1.0+ds-1.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-virtualenv",
"binary_version": "20.0.17-1ubuntu0.4+esm1"
},
{
"binary_name": "virtualenv",
"binary_version": "20.0.17-1ubuntu0.4+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "python-virtualenv",
"purl": "pkg:deb/ubuntu/python-virtualenv@20.0.17-1ubuntu0.4+esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"15.1.0+ds-2",
"15.1.0+ds-2build1",
"15.1.0+ds-2ubuntu1",
"20.0.13-1",
"20.0.17-1",
"20.0.17-1ubuntu0.3",
"20.0.17-1ubuntu0.4",
"20.0.17-1ubuntu0.4+esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-virtualenv",
"binary_version": "20.13.0+ds-2ubuntu0.1~esm1"
},
{
"binary_name": "virtualenv",
"binary_version": "20.13.0+ds-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "python-virtualenv",
"purl": "pkg:deb/ubuntu/python-virtualenv@20.13.0+ds-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"20.4.6+ds-2",
"20.10.0+ds-1",
"20.12.1+ds-1",
"20.13.0+ds-1",
"20.13.0+ds-2",
"20.13.0+ds-2ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-virtualenv",
"binary_version": "20.25.0+ds-2ubuntu0.1~esm1"
},
{
"binary_name": "virtualenv",
"binary_version": "20.25.0+ds-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "python-virtualenv",
"purl": "pkg:deb/ubuntu/python-virtualenv@20.25.0+ds-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"20.24.1+ds-1",
"20.24.6+ds-1",
"20.24.6+ds-2",
"20.25.0+ds-1",
"20.25.0+ds-2",
"20.25.0+ds-2ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-virtualenv",
"binary_version": "20.36.1+ds-1"
},
{
"binary_name": "virtualenv",
"binary_version": "20.36.1+ds-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "python-virtualenv",
"purl": "pkg:deb/ubuntu/python-virtualenv@20.36.1+ds-1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"20.31.2+ds-1",
"20.35.3+ds-1",
"20.35.4+ds-1",
"20.36.1+ds-1"
]
}
],
"aliases": [],
"details": "virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.13, the generated activate (bash and zsh) and activate.fish scripts place values already escaped by shlex.quote inside an additional quoted context. In the bash and zsh script, a crafted virtual environment path reaches __VIRTUAL_ENV__ when a relocated environment\u0027s recorded directory is absent; in the fish script, crafted Tcl or Tk library paths reach __TCL_LIBRARY__ or __TK_LIBRARY__. The surplus quotes can terminate the data-only quoted run and leave shell metacharacters parsed as commands when a user sources the activation script, allowing code execution with that user\u0027s privileges. This issue is fixed in version 21.7.13.",
"id": "UBUNTU-CVE-2026-102925",
"modified": "2026-09-29T21:17:00Z",
"published": "2026-09-29T21:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-102925"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-102925"
},
{
"type": "REPORT",
"url": "https://github.com/pypa/virtualenv/commit/4d5a105ec2a2723b8c7f4571bb68f4f71d01e3f6"
},
{
"type": "REPORT",
"url": "https://github.com/pypa/virtualenv/pull/3252"
},
{
"type": "REPORT",
"url": "https://github.com/pypa/virtualenv/releases/tag/21.7.13"
},
{
"type": "REPORT",
"url": "https://github.com/pypa/virtualenv/security/advisories/GHSA-p58f-9548-mpm2"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-102925"
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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.
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.
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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.
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