CVE-2026-23603: Gitea Open Source Git Server

Low severity, CVSS 3.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Blind SSRF in OAuth2 avatar synchronization via unvalidated OIDC picture claim

Affected products

• Gitea Gitea Open Source Git Server: up to and including 1.26.4

Published 2026-08-13. Last modified 2026-08-26.