9.6
CVE-2026-5845
- EPSS 0.02%
- Veröffentlicht 21.04.2026 22:42:13
- Zuletzt bearbeitet 29.04.2026 12:30:18
- Quelle product-cna@github.com
- CVE-Watchlists
- Unerledigt
Improper authorization fallback allows scoped user-to-server token installation escape in GitHub Enterprise Server
An improper authorization vulnerability in scoped user-to-server (ghu_) token authorization in GitHub Enterprise Server allows an authenticated attacker to access private repositories outside the intended installation scope, which can include write operations, via an authorization fallback that treated a revoked/deleted installation as a global installation context, which could be chained with token revocation timing and SSH push attribution to obtain and reuse a victim-scoped token. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, and 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Github ≫ Enterprise Server Version < 3.14.26
Github ≫ Enterprise Server Version >= 3.15.0 < 3.15.21
Github ≫ Enterprise Server Version >= 3.16.0 < 3.16.17
Github ≫ Enterprise Server Version >= 3.17.0 < 3.17.14
Github ≫ Enterprise Server Version >= 3.18.0 < 3.18.8
Github ≫ Enterprise Server Version >= 3.19.0 < 3.19.5
Github ≫ Enterprise Server Version3.20.0
VulnDex Vulnerability Enrichment
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Login
Login| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.02% | 0.061 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 9.6 | 3.1 | 5.8 |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
|
| product-cna@github.com | 7.2 | 0 | 0 |
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/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
|
CWE-639 Authorization Bypass Through User-Controlled Key
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.