HIGH 7.7 NVD
CVE-2026-76851
A Server-Side Request Forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed remote code execution on the instance. Insufficient n
A Server-Side Request Forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed remote code execution on the instance. Insufficient network isolation allowed malicious pre-receive hook code to impersonate an internal service and redirect trusted internal requests to a privileged service, leading to elevated code execution. Exploitation required pre-receive hook networking to be enabled and either site administrator privileges or write access to a repository containing a configured pre-receive hook. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.17.20, 3.18.14, 3.19.11, 3.20.7, and 3.21.5. This vulnerability was reported via the GitHub Bug Bounty program.
References
- https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.20
- https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.14
- https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.11
- https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.7
- https://docs.github.com/en/enterprise-server@3.21/admin/release-notes#3.21.5
This high severity vulnerability with a CVSS score of 7.7 was published on 2026-09-01 via NVD.
vulnfeed aggregates 11581 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.