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TI-2021-05730 Aliases CVE-2021-22869GHSA-7vxg-f9rp-jrr5

Improper access control in GitHub Enterprise Server allows self-hosted runners to execute outside their control group

Priority MEDIUM 44CWE-668Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

An improper access control vulnerability in GitHub Enterprise Server allowed a workflow job to execute in a self-hosted runner group it should not have had access to. This affects customers using self-hosted runner groups for access control. A repository with access to one enterprise runner group could access all of the enterprise runner groups within the organization because of improper authentication checks during the request. This could cause code to be run unintentionally by the incorrect runner group. This vulnerability affected GitHub Enterprise Server versions from 3.0.0 to 3.0.15 and 3.1.0 to 3.1.7 and was fixed in 3.0.16 and 3.1.8 releases.

Why it matters now

EPSS 0.01195 68th percentileScored 2026-11-07
Fix Fixed GitHub Enterprise Server (GitHub): 3.0.16, 3.1.8

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
GitHubGitHub Enterprise Server3.0 to before 3.0.16; 3.1 to before 3.1.83.0.16, 3.1.8Patch availableCNA
  • GitHub Enterprise Server VendorGitHub Affected 3.0 to before 3.0.16; 3.1 to before 3.1.8 Fixed in 3.0.16, 3.1.8 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*3.0.0 to before 3.0.16; 3.1.0 to before 3.1.8VulnerableGitHub
  • cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* Versions 3.0.0 to before 3.0.16; 3.1.0 to before 3.1.8 Vulnerable ·GitHub

Remediation

  • Fix · CNA GitHub Enterprise Server (GitHub) Fixed in 3.0.16, 3.1.8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-22869
  2. 2026-10-03 Alias added: GHSA-7vxg-f9rp-jrr5

References

Other 2

  • TI-2024-04632 An authentication bypass vulnerability was present in the GitHub Enterprise Server (GHES)… CVSS 4.0CRITICAL 10.0
  • TI-2024-00181 Unsafe Reflection in Github Enterprise Server leading to Command Injection CVSS 3.1CRITICAL 9.8
  • TI-2024-00466 Privilege Escalation by Code Injection in the Management Console in GitHub Enterprise Server CVSS 3.1HIGH 8.8
  • TI-2026-03340 Remote code execution via git push option injection in GitHub Enterprise Server CVSS 4.0HIGH 8.7
  • TI-2024-08804 Improper signature verification in GitHub Enterprise Server CVSS 4.0CRITICAL 9.5
  • TI-2026-08177 Server-side request forgery in GitHub Enterprise Server CVSS 4.0CRITICAL 9.2
See all 125 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences