Server-Side Request Forgery vulnerability was identified in GitHub Enterprise Server that allowed requests to attacker-controlled internal hosts
A Server-Side Request Forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed a repository contributor to cause the appliance to issue requests to attacker-controlled internal hosts, which could be chained to achieve remote code execution on the appliance. The secret scanning validator for GCP service account credentials trusted the token endpoint embedded in a committed credential and issued a request to it without restricting the destination. Exploitation required an authenticated user with permission to push to a repository on an instance with GitHub Advanced Security and secret scanning validity checks enabled, a non-default configuration. This vulnerability affected GitHub Enterprise Server 3.20, 3.21, and 3.22 and was fixed in versions 3.20.9, 3.21.7, and 3.22.2. This vulnerability was reported through the GitHub Bug Bounty program.
CVE-2026-96890
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-96890
Enterprise Server
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "GitHub",
"product": "Enterprise Server",
"versions": [
{
"status": "affected",
"changes": [
{
"at": "3.20.9",
"status": "unaffected"
}
],
"version": "3.20.0",
"lessThan": "3.20.*",
"versionType": "semver"
},
{
"status": "affected",
"changes": [
{
"at": "3.21.7",
"status": "unaffected"
}
],
"version": "3.21.0",
"lessThan": "3.21.*",
"versionType": "semver"
},
{
"status": "affected",
"changes": [
{
"at": "3.22.2",
"status": "unaffected"
}
],
"version": "3.22.0",
"lessThan": "3.22.*",
"versionType": "semver"
}
],
"defaultStatus": "unknown"
}
]- Related CVEs
- CVE-2026-96890
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #12000 · Revision 1
- Added to Heist Feed
- Publisher date