Vulnerability advisory
GO-2026-6051
Gitea Docker image: `REVERSE_PROXY_TRUSTED_PROXIES = *` default lets any source IP impersonate any user via `X-WEBAUTH-USER` in code.gitea.io/gitea
Also known as CVE-2026-20896GHSA-f75j-4cw6-rmx4
Severity
Severity not reported.
Affected versions
| Affected | Fixed in |
|---|---|
| All versions before 1.26.3 | 1.26.3 |
Description
Gitea Docker image: REVERSE_PROXY_TRUSTED_PROXIES = * default lets any source IP impersonate any user via X-WEBAUTH-USER in code.gitea.io/gitea
References
- Advisorygithub.com/go-gitea/gitea/security/advisories/GHSA-f75j-4cw6-rmx4 ↗
- Advisorynvd.nist.gov/vuln/detail/CVE-2026-20896 ↗
- Webblog.gitea.com/release-of-1.26.3-and-1.26.4 ↗
- Webgithub.com/go-gitea/gitea/commit/99f8b3d9a1d32f4c39828e07971455a18191e0b9 ↗
- Webgithub.com/go-gitea/gitea/pull/38151 ↗
- Webgithub.com/go-gitea/gitea/releases/tag/v1.26.3 ↗