critical9.8
CVE-2026-20896
Gitea Docker image versions up to and including 1.26.2 use REVERSE_PROXY_TRUSTED_PROXIES=* by default, allowing any source IP to impersonate a user when revers…
Impact
Gitea Docker image versions up to and including 1.26.2 use REVERSE_PROXY_TRUSTED_PROXIES=* by default, allowing any source IP to impersonate a user when reverse-proxy authentication headers such as X-WEBAUTH-USER are enabled.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | code.gitea.io/gitea | < 1.26.3 | 1.26.3 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-f75j-4cw6-rmx4
- https://github.com/go-gitea/gitea/security/advisories/GHSA-f75j-4cw6-rmx4
- https://nvd.nist.gov/vuln/detail/CVE-2026-20896
- https://github.com/go-gitea/gitea/pull/38151
- https://github.com/go-gitea/gitea/commit/99f8b3d9a1d32f4c39828e07971455a18191e0b9
- https://blog.gitea.com/release-of-1.26.3-and-1.26.4
- https://github.com/go-gitea/gitea/releases/tag/v1.26.3
- https://blog.gitea.com/release-of-1.26.3-and-1.26.4/