CVE-2026-20896
2 advisories.
Go/code.gitea.io/gitea CVE-2026-20896: critical 9.8, EPSS 2.76%
Gitea Docker image: `REVERSE_PROXY_TRUSTED_PROXIES = *` default lets any source IP impersonate any user via `X-WEBAUTH-USER`
Action: Upgrade code.gitea.io/gitea to 1.26.3 or later.
go get code.gitea.io/gitea@v1.26.3Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.26.3 | - |
Fixed versions
| 1.26.3 |
Sources
- osv: 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
- https://github.com/go-gitea/gitea/releases/tag/v1.26.3
CVE-2026-20896 · published · modified · JSON
Go/code.gitea.io/gitea CVE-2026-20896: unknown, EPSS 2.76%
Gitea Docker image: `REVERSE_PROXY_TRUSTED_PROXIES = *` default lets any source IP impersonate any user via `X-WEBAUTH-USER` in code.gitea.io/gitea
Action: Upgrade code.gitea.io/gitea to 1.26.3 or later.
go get code.gitea.io/gitea@v1.26.3Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.26.3 | - |
Fixed versions
| 1.26.3 |
Sources
- osv: GO-2026-6051
- https://github.com/go-gitea/gitea/security/advisories/GHSA-f75j-4cw6-rmx4
- https://nvd.nist.gov/vuln/detail/CVE-2026-20896
- https://blog.gitea.com/release-of-1.26.3-and-1.26.4
- https://github.com/go-gitea/gitea/commit/99f8b3d9a1d32f4c39828e07971455a18191e0b9
- https://github.com/go-gitea/gitea/pull/38151
- https://github.com/go-gitea/gitea/releases/tag/v1.26.3
CVE-2026-20896 · published · modified · JSON