CVE-2026-104633: DoS

Description

When migrating a repository from another Gitea instance, Gitea used the page size reported in the source server's API settings to end its paginated downloads. A source that reported `max_response_items` as `0` made these loops run indefinitely and grow server memory until it was exhausted. Any user who can migrate repositories could point a migration at a server they control and cause a denial of service.

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Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

CWE-835 CWE-835

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-jj5r-9rpc-8h6h

Frequently Asked Questions

What is CVE-2026-104633? +

When migrating a repository from another Gitea instance, Gitea used the page size reported in the source server's API settings to end its paginated downloads. A source that reported `max_response_items` as `0` made these loops run indefinitely and grow server memory until it was exhausted. Any user who can migrate repositories could point a migration at a server they control and cause a denial of service.

How do I check if I'm vulnerable to CVE-2026-104633? +

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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