# 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 reverse-proxy authentication headers such as X-WEBAUTH-USER are enabled.

- **CVSS:** 9.8 (CRITICAL)
- **EPSS:** 0.8%
- **CWE:** CWE-284

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-20896
Full threat coverage + IOCs via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp