CVE-2021-22869

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.

• CWE-668
• CWE-287

• https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.16
• https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.8
• https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.16
• https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.8

Published

Sep 24, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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