CVE-2021-22862

Summary

An improper access control vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user with the ability to fork a repository to disclose Actions secrets for the parent repository of the fork. This vulnerability existed due to a flaw that allowed the base reference of a pull request to be updated to point to an arbitrary SHA or another pull request outside of the fork repository. By establishing this incorrect reference in a PR, the restrictions that limit the Actions secrets sent a workflow from forks could be bypassed. This vulnerability affected GitHub Enterprise Server version 3.0.0, 3.0.0.rc2, and 3.0.0.rc1. This vulnerability was reported via the GitHub Bug Bounty program.

Affected Software

VendorProductVersion RangeStatus
GitHubGitHub Enterprise Server3.0 < 3.0.1affected

Weaknesses

  • CWE-285: CWE-285: Improper Authorization

ADP Enrichment

CVE Program Container

Additional References

References