CVE-2026-20896: exploitation status and patch state

CVE-2026-20896 · CVSS 9.8 CRITICAL · EPSS 32%

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.

Is CVE-2026-20896 exploited?

• Not in the CISA KEV catalog.
• EPSS puts exploitation in the next 30 days at 32%.
• Public exploit code: none found in monitored sources.

Which products and versions are affected?

No affected package list recorded here yet.

Is there a patch?

No patch identifier recorded here yet.

What PlainSec published about CVE-2026-20896

• One Header Can Own a Gitea Repo Fleet (2026-07-11)
• Gitea Docker Images Trust Spoofed Logins by Default (2026-07-07)

Primary sources

• NVD record

What this record does not say

• No affected package data.
• No patch identifier.

KEV and EPSS are re-checked daily. Record last updated 2026-08-11.