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(CVE-2026-39822)
Vulnerability from cleanstart – Published: 2026-09-17 00:56 – Updated: 2026-09-18 11:59 – Source website
Withdrawn 2026-09-18
VLAI
Summary
Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection
Details
Multiple security vulnerabilities affect the gitea package. Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. See references for individual vulnerability details.
Severity
9.8 (Critical)
References
{
"affected": [
{
"package": {
"ecosystem": "CleanStart",
"name": "gitea"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.27.2-r2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"credits": [],
"database_specific": {},
"details": "Multiple security vulnerabilities affect the gitea package. Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. See references for individual vulnerability details.",
"id": "CLEANSTART-2026-GJ00206",
"modified": "2026-09-18T11:59:01.768079Z",
"published": "2026-09-17T00:56:49.342966Z",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-GJ00206.json"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39822"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42505"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-46603"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-56855"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-56864"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-56865"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-71556"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-71557"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-78662"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-84303"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-84304"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-84445"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-259r-337f-4rfw"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-3fxj-6jh8-hvhx"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-9g5q-2w5x-hmxf"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-hrxh-6v49-42gf"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-rjr7-jggh-pgcg"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39822"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42505"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46603"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56855"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56864"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56865"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71556"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71557"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-78662"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84303"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84304"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84445"
}
],
"related": [],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection",
"upstream": [
"CVE-2026-39822",
"CVE-2026-42505",
"CVE-2026-46603",
"CVE-2026-56855",
"CVE-2026-56864",
"CVE-2026-56865",
"CVE-2026-71556",
"CVE-2026-71557",
"CVE-2026-78662",
"CVE-2026-84303",
"CVE-2026-84304",
"CVE-2026-84445",
"ghsa-259r-337f-4rfw",
"ghsa-3fxj-6jh8-hvhx",
"ghsa-9g5q-2w5x-hmxf",
"ghsa-hrxh-6v49-42gf",
"ghsa-rjr7-jggh-pgcg"
],
"withdrawn": "2026-09-18T11:59:01.768079Z"
}
CVE-2026-39822 (GCVE-0-2026-39822)
Vulnerability from cvelistv5 – Published: 2026-07-08 15:46 – Updated: 2026-07-08 19:39
VLAI
EPSS
VEX
Title
Root escape via symlink plus trailing slash in os
Summary
On Unix systems, opening a file in an os.Root improperly follows symlinks to locations outside of the Root when the final path component of the a path is a symbolic link and the path ends in /. For example, 'root.Open("symlink/")' will open "symlink" even when "symlink" is a symbolic link pointing outside of the root.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 18:06 UTC
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | os |
Affected:
0 , < 1.25.12
(semver)
Affected: 1.26.0-0 , < 1.26.5 (semver) Affected: 1.27.0-0 , < 1.27.0-rc.2 (semver) |
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{
"name": "Root.Open"
},
{
"name": "Root.OpenFile"
},
{
"name": "Root.OpenRoot"
},
{
"name": "Root.ReadFile"
},
{
"name": "Root.WriteFile"
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{
"name": "rootFS.Open"
},
{
"name": "rootFS.ReadDir"
},
{
"name": "rootFS.ReadFile"
}
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],
"credits": [
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"value": "Mundur (https://github.com/M0nd0R)"
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],
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"lang": "en",
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}
],
"problemTypes": [
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"description": "CWE-61: UNIX Symbolic Link (Symlink) Following",
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},
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"url": "https://groups.google.com/g/golang-announce/c/OrmQE_Yp5Sc"
},
{
"url": "https://go.dev/cl/797880"
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"url": "https://pkg.go.dev/vuln/GO-2026-4970"
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],
"title": "Root escape via symlink plus trailing slash in os"
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"dateReserved": "2026-04-07T18:13:03.527Z",
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CVE-2026-42505 (GCVE-0-2026-42505)
Vulnerability from cvelistv5 – Published: 2026-07-08 15:46 – Updated: 2026-07-08 19:38
VLAI
EPSS
VEX
Title
Invoking Encrypted Client Hello privacy leak in crypto/tls
Summary
Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 18:03 UTC
CWE
- CWE-201 - Insertion of Sensitive Information Into Sent Data
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/tls |
Affected:
0 , < 1.25.12
(semver)
Affected: 1.26.0-0 , < 1.26.5 (semver) Affected: 1.27.0-0 , < 1.27.0-rc.2 (semver) |
Credits
{
"containers": {
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"attackVector": "NETWORK",
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"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
}
},
{
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{
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},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-08T18:03:53.821942Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
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"description": "CWE-201 Insertion of Sensitive Information Into Sent Data",
"lang": "en",
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]
}
],
"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "crypto/tls",
"product": "crypto/tls",
"programRoutines": [
{
"name": "clientHelloMsg.marshalMsg"
},
{
"name": "Conn.Handshake"
},
{
"name": "Conn.HandshakeContext"
},
{
"name": "Conn.Read"
},
{
"name": "Conn.Write"
},
{
"name": "Dial"
},
{
"name": "DialWithDialer"
},
{
"name": "Dialer.Dial"
},
{
"name": "Dialer.DialContext"
},
{
"name": "QUICConn.HandleData"
},
{
"name": "QUICConn.SendSessionTicket"
},
{
"name": "QUICConn.Start"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.25.12",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
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"status": "affected",
"version": "1.26.0-0",
"versionType": "semver"
},
{
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"status": "affected",
"version": "1.27.0-0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Coia Prant (github.com/rbqvq)"
}
],
"descriptions": [
{
"lang": "en",
"value": "Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-201: Insertion of Sensitive Information Into Sent Data",
"lang": "en"
}
]
}
],
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"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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},
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},
{
"url": "https://go.dev/issue/79282"
},
{
"url": "https://groups.google.com/g/golang-announce/c/OrmQE_Yp5Sc"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5856"
}
],
"title": "Invoking Encrypted Client Hello privacy leak in crypto/tls"
}
},
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"datePublished": "2026-07-08T15:46:33.407Z",
"dateReserved": "2026-04-28T00:21:12.792Z",
"dateUpdated": "2026-07-08T19:38:17.603Z",
"state": "PUBLISHED"
},
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"dataVersion": "5.2"
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CVE-2026-46603 (GCVE-0-2026-46603)
Vulnerability from cvelistv5 – Published: 2026-08-14 16:38 – Updated: 2026-08-14 19:36
VLAI
EPSS
VEX
Title
Excessive memory allocation during VP8L decoding in golang.org/x/image
Summary
VP8L decoding in golang.org/x/image/vp8l can allocate an excessive amount of memory when processing a crafted VP8L image containing many unused Huffman tree groups. This allows a remote attacker to cause a denial of service via memory exhaustion.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 19:36 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/image | golang.org/x/image/vp8l |
Affected:
0 , < 0.45.0
(semver)
|
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"timestamp": "2026-08-14T19:36:26.966791Z",
"version": "2.0.3"
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}
]
}
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"providerMetadata": {
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},
"title": "CISA ADP Vulnrichment"
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],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/image/vp8l",
"product": "golang.org/x/image/vp8l",
"programRoutines": [
{
"name": "decoder.decodeHuffmanGroups"
},
{
"name": "decoder.decodeHuffmanTree"
},
{
"name": "Decode"
}
],
"vendor": "golang.org/x/image",
"versions": [
{
"lessThan": "0.45.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Daniele Ballarini"
}
],
"descriptions": [
{
"lang": "en",
"value": "VP8L decoding in golang.org/x/image/vp8l can allocate an excessive amount of memory when processing a crafted VP8L image containing many unused Huffman tree groups. This allows a remote attacker to cause a denial of service via memory exhaustion."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-789: Memory Allocation with Excessive Size Value",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-14T16:38:16.879Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/issue/80069"
},
{
"url": "https://go.dev/cl/793460"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-6222"
}
],
"title": "Excessive memory allocation during VP8L decoding in golang.org/x/image"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2026-46603",
"datePublished": "2026-08-14T16:38:16.879Z",
"dateReserved": "2026-05-15T17:35:00.814Z",
"dateUpdated": "2026-08-14T19:36:57.436Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-56855 (GCVE-0-2026-56855)
Vulnerability from cvelistv5 – Published: 2026-09-02 19:37 – Updated: 2026-09-03 14:14
VLAI
EPSS
VEX
Title
Prevent DoS on deadlocked established channel in golang.org/x/crypto/ssh
Summary
Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. Now, we handle all RFC 4254 channel messages; global requests are handled explicitly. Then, treat all other messages as a protocol error and tear the connection down instead of buffering and blocking.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 14:13 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/crypto | golang.org/x/crypto/ssh |
Affected:
0 , < 0.56.0
(semver)
|
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
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"packageName": "golang.org/x/crypto/ssh",
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"lang": "en",
"value": "Will Mortensen"
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"descriptions": [
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"value": "Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. Now, we handle all RFC 4254 channel messages; global requests are handled explicitly. Then, treat all other messages as a protocol error and tear the connection down instead of buffering and blocking."
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},
{
"url": "https://pkg.go.dev/vuln/GO-2026-6355"
}
],
"title": "Prevent DoS on deadlocked established channel in golang.org/x/crypto/ssh"
}
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CVE-2026-56864 (GCVE-0-2026-56864)
Vulnerability from cvelistv5 – Published: 2026-08-13 21:58 – Updated: 2026-08-14 16:16
VLAI
EPSS
VEX
Title
Ignore unrelated, unauthenticated hashes in Lookup in golang.org/x/mod/sumdb
Summary
A malicious GOSUMDB was capable of serving arbitrary module content not contained within the transparency log. This attack allows for a coordinating GOPROXY and GOSUMDB to serve a client malicious module content that cannot be detected by evaluating the transparency log. In order to determine if you have been affected: rm -r go.sum go.work.sum vendor/ && go mod tidy
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 16:16 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Go toolchain | cmd/go |
Affected:
0 , < 1.25.13
(semver)
Affected: 1.26.0-0 , < 1.26.6 (semver) Affected: 1.27.0-0 , < 1.27.0-rc.3 (semver) |
|
| golang.org/x/mod | golang.org/x/mod/sumdb |
Affected:
0 , < 0.40.0
(semver)
|
Credits
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"url": "https://go.dev/cl/815020"
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CVE-2026-56865 (GCVE-0-2026-56865)
Vulnerability from cvelistv5 – Published: 2026-08-13 21:58 – Updated: 2026-08-14 15:34
VLAI
EPSS
VEX
Title
Fix transparency log tile verification bypass in golang.org/x/mod/sumdb/tlog
Summary
A malicious GOPROXY was previously capable of forging up to two sumdb tiles that allow for a requested module to bypass the GOSUMDB check and persist attacker-controlled module content to a local Go module cache. This attack allows for a malicious GOPROXY to serve malicious module content that cannot be detected by evaluating the transparency log. All tiles are now correctly verified against their parents. In order to determine if you have been affected: rm -r go.sum go.work.sum vendor/ && go mod tidy
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 15:33 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Go toolchain | cmd/go |
Affected:
0 , < 1.25.13
(semver)
Affected: 1.26.0-0 , < 1.26.6 (semver) Affected: 1.27.0-0 , < 1.27.0-rc.3 (semver) |
|
| golang.org/x/mod | golang.org/x/mod/sumdb/tlog |
Affected:
0 , < 0.40.0
(semver)
|
Credits
{
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}
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"url": "https://go.dev/cl/814960"
},
{
"url": "https://go.dev/cl/815020"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-6179"
}
],
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CVE-2026-71556 (GCVE-0-2026-71556)
Vulnerability from cvelistv5 – Published: 2026-08-07 16:37 – Updated: 2026-08-07 16:58
VLAI
EPSS
VEX
Title
go-git: Worktree operations may follow symlinks
Summary
go-git is an extensible git implementation library written in pure Go. Prior to 5.19.2 and 6.0.0-alpha.5, worktree operations (including checkout, status, and add) resolve symbolic links inside the working tree without confining resolution to the worktree boundary, so a maliciously crafted repository containing a symlink can cause go-git to read from or write to files outside the intended working directory when the repository is cloned and its worktree operations are used. Versions 5.19.2 and 6.0.0-alpha.5.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 16:58 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/go-git/go-git/security/advisor… | x_refsource_CONFIRM |
| https://github.com/go-git/go-git/commit/008a78f2d… | x_refsource_MISC |
| https://github.com/go-git/go-git/commit/661d1c7f1… | x_refsource_MISC |
| https://github.com/go-git/go-git/releases/tag/v5.19.2 | x_refsource_MISC |
| https://github.com/go-git/go-git/releases/tag/v6.… | x_refsource_MISC |
Impacted products
{
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"title": "CISA ADP Vulnrichment"
}
],
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"product": "go-git",
"vendor": "go-git",
"versions": [
{
"status": "affected",
"version": "\u003c 5.19.2"
},
{
"status": "affected",
"version": "\u003e= 6.0.0-alpha.1, \u003c 6.0.0-alpha.5"
}
]
}
],
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}
],
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{
"name": "https://github.com/go-git/go-git/security/advisories/GHSA-hc8v-wwc9-vgxm",
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"x_refsource_CONFIRM"
],
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"name": "https://github.com/go-git/go-git/commit/008a78f2dd86f52544ddff8b8e8ddeecdf3f7aab",
"tags": [
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"x_refsource_MISC"
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"name": "https://github.com/go-git/go-git/releases/tag/v5.19.2",
"tags": [
"x_refsource_MISC"
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"url": "https://github.com/go-git/go-git/releases/tag/v5.19.2"
},
{
"name": "https://github.com/go-git/go-git/releases/tag/v6.0.0-alpha.5",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/go-git/go-git/releases/tag/v6.0.0-alpha.5"
}
],
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"discovery": "UNKNOWN"
},
"title": "go-git: Worktree operations may follow symlinks"
}
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CVE-2026-71557 (GCVE-0-2026-71557)
Vulnerability from cvelistv5 – Published: 2026-08-07 16:41 – Updated: 2026-08-07 17:55
VLAI
EPSS
VEX
Title
go-git: Malicious reference names may modify files outside the reference storage
Summary
go-git is an extensible git implementation library written in pure Go. Prior to 5.19.2 and 6.0.0-alpha.5, reference names are not sanitized before being used to construct on-disk paths under the reference storage directory, so a maliciously crafted reference name (for example containing directory-traversal sequences) can cause go-git to write files outside the intended reference storage directory. Versions 5.19.2 and 6.0.0-alpha.5 fix the issue.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 17:53 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/go-git/go-git/security/advisor… | x_refsource_CONFIRM |
| https://github.com/go-git/go-git/pull/2247 | x_refsource_MISC |
| https://github.com/go-git/go-git/pull/2254 | x_refsource_MISC |
| https://github.com/go-git/go-git/commit/4a0e66d55… | x_refsource_MISC |
| https://github.com/go-git/go-git/commit/da9f7d8a0… | x_refsource_MISC |
| https://github.com/go-git/go-git/releases/tag/v5.19.2 | x_refsource_MISC |
| https://github.com/go-git/go-git/releases/tag/v6.… | x_refsource_MISC |
Impacted products
{
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}
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}
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
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"confidentialityImpact": "NONE",
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"userInteraction": "REQUIRED",
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"version": "3.1"
}
}
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"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
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],
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},
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"name": "https://github.com/go-git/go-git/pull/2247",
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"x_refsource_MISC"
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"tags": [
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],
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{
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],
"url": "https://github.com/go-git/go-git/commit/4a0e66d555de5f9a30c31e2df64f445f42bd01e7"
},
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"url": "https://github.com/go-git/go-git/commit/da9f7d8a0e98b475600177348d6ece384a370f36"
},
{
"name": "https://github.com/go-git/go-git/releases/tag/v5.19.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/go-git/go-git/releases/tag/v5.19.2"
},
{
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],
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"discovery": "UNKNOWN"
},
"title": "go-git: Malicious reference names may modify files outside the reference storage"
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-78662 (GCVE-0-2026-78662)
Vulnerability from cvelistv5 – Published: 2026-09-02 19:37 – Updated: 2026-09-03 13:20
VLAI
EPSS
VEX
Title
Prevent DoS on deadlocked undecided channel in golang.org/x/crypto/ssh
Summary
Previously, a channel registered in the mux's chanList is not usable until it is established. A malicious peer was able flood the channel's incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 13:19 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/crypto | golang.org/x/crypto/ssh |
Affected:
0 , < 0.56.0
(semver)
|
Credits
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"defaultStatus": "unaffected",
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"programRoutines": [
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},
{
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{
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},
{
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},
{
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{
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}
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"url": "https://go.dev/issue/81316"
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"url": "https://go.dev/cl/826504"
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"url": "https://groups.google.com/g/golang-announce/c/1y3fb2np35U"
},
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"url": "https://pkg.go.dev/vuln/GO-2026-6354"
}
],
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},
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CVE-2026-84303 (GCVE-0-2026-84303)
Vulnerability from cvelistv5 – Published: 2026-09-01 18:14 – Updated: 2026-09-02 19:14
VLAI
EPSS
VEX
Title
gRPC-Go: xDS RBAC HTTP Filter bypass via mixed-case Header Matching and gRFC A41 validation evasion
Summary
gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, the xDS RBAC HTTP filter in internal/xds/httpfilter/rbac/rbac.go does not lowercase header matcher names in normalizeHeaderMatcher even though incoming metadata keys are lowercase. A DENY policy using a mixed-case name such as X-Role or User-Agent therefore does not match and fails open, allowing requests that should be rejected. The same case mismatch permits :Scheme or Grpc-Status to evade gRFC A41 validation and prevents Host from being rewritten to :authority. This issue is fixed in version 1.83.1.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 19:14 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/grpc/grpc-go/security/advisori… | x_refsource_CONFIRM |
| https://github.com/grpc/grpc-go/pull/9332 | x_refsource_MISC |
| https://github.com/grpc/grpc-go/pull/9335 | x_refsource_MISC |
| https://github.com/grpc/grpc-go/commit/db9482836c… | x_refsource_MISC |
| https://github.com/grpc/grpc-go/commit/ebba6f3f1b… | x_refsource_MISC |
| https://github.com/grpc/grpc-go/releases/tag/v1.83.1 | x_refsource_MISC |
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"discovery": "UNKNOWN"
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"title": "gRPC-Go: xDS RBAC HTTP Filter bypass via mixed-case Header Matching and gRFC A41 validation evasion"
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Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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
- 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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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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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