CVE-2026-105268: Auth Bypass

Description

The Gitea API routes for issue attachments (`/api/v1/repos/{owner}/{repo}/issues/{index}/assets/{attachment_id}`) also accepted attachments that belong to comments on the issue. Because the author of an issue may edit and delete the issue's attachments, a user who opened an issue could rename or delete attachments that other users had posted in comments on that issue. The contents of the attachments could not be changed.

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Weakness Type (CWE)

CWE-639 CWE-639

CWE-863 Incorrect Authorization

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-96qg-qxxj-r8xq

Frequently Asked Questions

What is CVE-2026-105268? +

The Gitea API routes for issue attachments (`/api/v1/repos/{owner}/{repo}/issues/{index}/assets/{attachment_id}`) also accepted attachments that belong to comments on the issue. Because the author of an issue may edit and delete the issue's attachments, a user who opened an issue could rename or delete attachments that other users had posted in comments on that issue. The contents of the attachments could not be changed.

How do I check if I'm vulnerable to CVE-2026-105268? +

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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