What is GHSA-4xx9-vc8v-87hv?

GHSA-4xx9-vc8v-87hv is a security advisory published by GitHub Security Advisories with Medium severity. Gitea does not properly validate repository ownership when linking attachments to releases

Which CVE IDs does GHSA-4xx9-vc8v-87hv cover?

GHSA-4xx9-vc8v-87hv covers the following CVE IDs: CVE-2026-20912. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by GHSA-4xx9-vc8v-87hv?

GHSA-4xx9-vc8v-87hv affects 1 product, including: go/github.com/go-gitea/gitea:\u003c 1.25.4.

GHSA-4xx9-vc8v-87hvMedium

Gitea does not properly validate repository ownership when linking attachments to releases

Vendor

GitHub Security Advisories

Published

January 23, 2026

Last Modified

January 23, 2026

🔗 CVE IDs covered (1)

CVE-2026-20912 →

📋 Description

Gitea does not properly validate repository ownership when linking attachments to releases. An attachment uploaded to a private repository could potentially be linked to a release in a different public repository, making it accessible to unauthorized users.

🎯 Affected products1

go/github.com/go-gitea/gitea:< 1.25.4

🔗 References (7)

https://nvd.nist.gov/vuln/detail/CVE-2026-20912
https://github.com/go-gitea/gitea/pull/36320
https://github.com/go-gitea/gitea/pull/36355
https://blog.gitea.com/release-of-1.25.4
https://github.com/go-gitea/gitea/releases/tag/v1.25.4
https://github.com/go-gitea/gitea/commit/fbea2c68e8df11cfa94e8ead913b79946780ed30
https://github.com/advisories/GHSA-4xx9-vc8v-87hv