CVE-2026-20897

Summary

Gitea does not properly validate repository ownership when deleting Git LFS locks. A user with write access to one repository may be able to delete LFS locks belonging to other repositories.

Affected Software

Weaknesses

• CWE-284: CWE-284: Improper Access Control
• CWE-639: CWE-639: Authorization Bypass Through User-Controlled Key

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: total

gitea: Gitea Git LFS Lock Deletion Broken Access Control (Cross-Repo IDOR)

Additional References

• https://access.redhat.com/security/cve/CVE-2026-20897
• https://bugzilla.redhat.com/show_bug.cgi?id=2432204
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20897.json

References

• https://github.com/go-gitea/gitea/security/advisories/GHSA-rrq5-r9h5-pc7c
• https://github.com/go-gitea/gitea/pull/36344
• https://github.com/go-gitea/gitea/pull/36349
• https://github.com/go-gitea/gitea/releases/tag/v1.25.4
• https://blog.gitea.com/release-of-1.25.4/

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