CVE-2026-20896

Published: Jul 3, 2026Modified: Jul 7, 2026Deferred

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: 88ee5874-cf24-4952-aea0-31affedb7ff2 (Secondary)

Description

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.

Related CWEs

CWE-284

Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

References (5)

https://blog.gitea.com/release-of-1.26.3-and-1.26.4/

Source: 88ee5874-cf24-4952-aea0-31affedb7ff2

https://github.com/go-gitea/gitea/pull/38151

Source: 88ee5874-cf24-4952-aea0-31affedb7ff2

https://github.com/go-gitea/gitea/releases/tag/v1.26.3

Source: 88ee5874-cf24-4952-aea0-31affedb7ff2

https://github.com/go-gitea/gitea/security/advisories/GHSA-f75j-4cw6-rmx4

Source: 88ee5874-cf24-4952-aea0-31affedb7ff2

https://github.com/go-gitea/gitea/security/advisories/GHSA-f75j-4cw6-rmx4

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.