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CVE-2026-110288

5.3 mediumEPSS 0.2%

Medium (5.3). EPSS 0.2% estimated probability of exploitation activity in the next 30 days.

On this page
A cross-site request forgery vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to delete stored Slack and Microsoft Teams ChatOps configuration and provider credentials by inducing an authenticated Management Console operator's browser to send a cross-site GET request to the integration removal endpoint without a CSRF token. Exploitation required configured ChatOps integrations and an operator visiting attacker-controlled content while signed in to the Management Console; deletion could disrupt ChatOps notifications and commands when configuration was applied or services reloaded. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.23 and was fixed in versions 3.19.14, 3.20.10, 3.21.8, and 3.22.3. This vulnerability was reported via the GitHub Bug Bounty program.

Severity

CVSS 4.0

5.3 medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.2% estimated probability of exploitation activity in the next 30 days; 8th percentile. Scored 2026-11-04. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-352 Cross-Site Request Forgery (Cross Site Reference Forgery)
OWASP Top 10
A01:2025 Broken Access Control
Published
Record from
the NVD, synced

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Versions

From the CNA's record in the CVE List.

ProductAffected
GitHub Enterprise Serverfrom 3.19.0 before 3.19.*
GitHub Enterprise Serverfrom 3.20.0 before 3.20.*
GitHub Enterprise Serverfrom 3.21.0 before 3.21.*
GitHub Enterprise Serverfrom 3.22.0 before 3.22.*

Fixed in

ProductFixed in
GitHub Enterprise Server3.19.14
GitHub Enterprise Server3.20.10
GitHub Enterprise Server3.21.8
GitHub Enterprise Server3.22.3

Attack patterns (CAPEC)

  • CAPEC-62 Cross Site Request Forgery Likelihood: High · Severity: Very High
  • CAPEC-111 JSON Hijacking (aka JavaScript Hijacking) Likelihood: High · Severity: High
  • CAPEC-462 Cross-Domain Search Timing Severity: Medium
  • CAPEC-467 Cross Site Identification Severity: Low

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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