CVE-2026-20736: Gitea has improper access control for uploaded attachments

January 23, 2026

Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access.

References

blog.gitea.com/release-of-1.25.4
github.com/advisories/GHSA-hgr3-x44x-33hx
github.com/go-gitea/gitea
github.com/go-gitea/gitea/commit/fbea2c68e8df11cfa94e8ead913b79946780ed30
github.com/go-gitea/gitea/pull/36320
github.com/go-gitea/gitea/releases/tag/v1.25.4
nvd.nist.gov/vuln/detail/CVE-2026-20736

Code Behaviors & Features

Detect and mitigate CVE-2026-20736 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →