CVE-2026-96594: XSS

Description

The Gitea API endpoint `GET /api/v1/repos/{owner}/{repo}/media/{filepath}` wrote files of up to 1 KiB that are stored directly in Git, not in LFS, to the response without the content type and disposition headers Gitea uses for user content. An HTML file committed to a repository was therefore rendered by the browser on the Gitea origin. A user who can push to a repository could run JavaScript in the session of a victim who opens the media URL and act with the victim's permissions.

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Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other References

https://blog.gitea.com/release-of-28.1.0/ https://github.com/go-gitea/gitea/pull/39501 https://github.com/go-gitea/gitea/pull/39507 https://github.com/go-gitea/gitea/releases/tag/v28.1.0 https://github.com/go-gitea/gitea/security/advisories/GHSA-94rx-fqm6-q23v

Frequently Asked Questions

What is CVE-2026-96594? +

The Gitea API endpoint `GET /api/v1/repos/{owner}/{repo}/media/{filepath}` wrote files of up to 1 KiB that are stored directly in Git, not in LFS, to the response without the content type and disposition headers Gitea uses for user content. An HTML file committed to a repository was therefore rendered by the browser on the Gitea origin. A user who can push to a repository could run JavaScript in the session of a victim who opens the media URL and act with the victim's permissions.

How do I check if I'm vulnerable to CVE-2026-96594? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-96594