CVE-2026-110288: GitHub Enterprise Server · Cross-Site Request Forgery
Affects GitHub Enterprise ServerSource CVE Database V5
Not known to be exploited · CVSS 5.3 Medium · fixed in 3.22.3 : update GitHub Enterprise Server when convenient.
Data as of 3 Nov 2026, 23:13 UTC
Thin evidence
One scorer or none| CNA (GitHub_P) | CVSS 4.0 | 5.3 |
|---|
- Patch
- Available – fixed in 3.22.3, 3.21.8, 3.20.10 +1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
Upgrade GitHub Enterprise Server to 3.22.3, 3.21.8, 3.20.10 or 3.19.14.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| GitHubEnterprise Server | Affected
| Fixed in
|
| GitHubEnterprise Server | Affected
| Fixed in
|
| GitHubEnterprise Server | Affected
| Fixed in
|
| GitHubEnterprise Server | Affected
| Fixed in
|
AI-suggested
Fixed versions 3.19.14, 3.20.10, 3.21.8, and 3.22.3 are available and should be applied to remediate this vulnerability. Users should upgrade affected GitHub Enterprise Server instances to one of these versions. No additional mitigation is required if these versions are deployed.
Description
CVE-2026-110288 is a cross-site request forgery (CSRF) vulnerability in GitHub Enterprise Server that allows an unauthenticated attacker to delete stored Slack and Microsoft Teams ChatOps configuration and provider credentials. Exploitation requires that ChatOps integrations are configured and that an authenticated Management Console operator visits attacker-controlled content. This vulnerability affects versions prior to 3.19.14, 3.20.10, 3.21.8, and 3.22.3 and was fixed in those versions. The impact includes disruption of ChatOps notifications and commands when configurations are applied or services reloaded.
References
- docs.github.com/en/enterprise-server@3.19/admin/release-notes (opens in a new tab)
- docs.github.com/en/enterprise-server@3.20/admin/release-notes (opens in a new tab)
- docs.github.com/en/enterprise-server@3.21/admin/release-notes (opens in a new tab)
- docs.github.com/en/enterprise-server@3.22/admin/release-notes (opens in a new tab)