CVE-2026-8606
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Server-Side Request Forgery in GitHub Enterprise Server via Advisory Package URL Endpoint
A Server-Side Request Forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed an attacker to cause the server to issue HTTP requests to internal services via the security advisories package lookup feature. By directing requests to an internal management service and measuring response timing, an attacker could infer the values of sensitive environment variables, including signing secrets and private keys. Exploitation required GitHub Packages to be enabled; on instances not running in private mode the vulnerability was exploitable without authentication, otherwise any authenticated user could exploit it. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21.1 and was fixed in versions 3.20.3, 3.19.7, 3.18.10, 3.17.16, and 3.16.19. This vulnerability was reported via the GitHub Bug Bounty program.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Enterprise Server
- Vendor
- GitHub
- Product
- Enterprise Server
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.21.0 | affected | semver | 3.21.1 | Unavailable |
|
| 3.20.0 | affected | semver | Unavailable | 3.20.2 |
|
| 3.19.0 | affected | semver | Unavailable | 3.19.6 |
|
| 3.18.0 | affected | semver | Unavailable | 3.18.9 |
|
| 3.17.0 | affected | semver | Unavailable | 3.17.15 |
|
| 3.16.0 | affected | semver | Unavailable | 3.16.18 |
|