CVE-2026-20896

CVE-2026-20896: Gitea Docker Image Authentication Bypass PoC !WARNING Use this PoC only in a local lab or against a system you are explicitly authorized to test. https://github.com/user-attachments/assets/b73af2fe-0e59-438b-80d6-be93fd75697b Overview CVE-2026-20896 is an authentication bypass in...

Gitea Docker Image <= 1.26.2 - Reverse Proxy Header Authentication Bypass

The official Gitea Docker image through version 1.26.2 ships with REVERSEPROXYTRUSTEDPROXIES set to a wildcard, causing Gitea to trust reverse-proxy authentication headers X-WEBAUTH-USER from any source IP instead of restricting trust to the configured reverse proxy. When reverse-proxy...

CVE-2026-20896

CVE-2026-20896 Gitea's official Docker image up to and including 1.26.2 ships REVERSEPROXYTRUSTEDPROXIES = in its default config. If you turn on reverse-proxy login, that wildcard means every source IP is treated as a trusted proxy, so anyone who can reach the port can send an X-WEBAUTH-USER head...

cve-2026-20896-gitea-poc

CVE-2026-20896 Gitea Docker Auth Bypass Checker Authorized red team / pentest operations only. This repository contains a minimal checker for CVE-2026-20896, an authentication bypass in official Gitea Docker images up to and including 1.26.2 when reverse-proxy authentication is enabled. What...

CVE-2026-20896

CVE-2026-20896: Gitea Docker Image Authentication Bypass PoC !WARNING Use this PoC only in a local lab or against a system you are explicitly authorized to test. https://github.com/user-attachments/assets/b73af2fe-0e59-438b-80d6-be93fd75697b Overview CVE-2026-20896 is an authentication bypass in...

Exploit for CVE-2026-20896

CVE-2026-20896: Gitea Docker Image Authentication Bypass PoC...

Exploit for CVE-2026-20896

CVE-2026-20896 - Gitea ≤1.26.2 Authentication Bypass 1. What...

CVE-2026-20896 — Updated!

CVE-2026-20896: Gitea Docker Image Authentication Bypass PoC !WARNING Use this PoC only in a local lab or against a system you are explicitly authorized to test. https://github.com/user-attachments/assets/b73af2fe-0e59-438b-80d6-be93fd75697b Overview CVE-2026-20896 is an authentication bypass in...

SUSE CVE-2026-20896

Gitea Docker image versions up to and including 1.26.2 use REVERSEPROXYTRUSTEDPROXIES= by default, allowing any source IP to impersonate a user when reverse-proxy authentication headers such as X-WEBAUTH-USER are enabled...

Exploit for CVE-2026-20896

CVE-2026-20896 Gitea Docker Auth Bypass Checker Authorized re...

Exploit for CVE-2026-20896

CVE-2026-20896 Gitea's official Docker image up to and inclu...

CVE-2026-20896: Improper Access Control

Gitea Docker image versions up to and including 1.26.2 use REVERSEPROXYTRUSTEDPROXIES= by default, allowing any source IP to impersonate a user when reverse-proxy authentication headers such as X-WEBAUTH-USER are enabled...

CVE-2026-25119: Authentication Bypass by Spoofing

Gogs is an open source self-hosted Git service. Prior to 0.14.3, when ENABLEREVERSEPROXYAUTHENTICATION is enabled, Gogs accepts the configured authentication header default: X-WEBAUTH-USER directly from client requests without validating that the request originated from a trusted reverse proxy. A...

CVE-2025-46341

FreshRSS is a self-hosted RSS feed aggregator. Prior to version 1.26.2, when the server is using HTTP auth via reverse proxy, it's possible to impersonate any user either via the "Remote-User" header or the "X-WebAuth-User" header by making specially crafted requests via the add feed functionalit...

CVE-2025-46341: Server-Side Request Forgery (SSRF)

FreshRSS is a self-hosted RSS feed aggregator. Prior to version 1.26.2, when the server is using HTTP auth via reverse proxy, it's possible to impersonate any user either via the Remote-User header or the X-WebAuth-User header by making specially crafted requests via the add feed functionality an...

grafana: Escalation from admin to server admin when auth proxy is used

A flaw was found in the grafana package. Auth proxy allows authentication of a user by only providing the username or email in an X-WEBAUTH-USER HTTP header. The trust assumption is that a front proxy will take care of authentication and that the Grafana server is only publicly reachable with thi...

CVE-2022-35957

A flaw was found in the grafana package. Auth proxy allows authentication of a user by only providing the username or email in an X-WEBAUTH-USER HTTP header. The trust assumption is that a front proxy will take care of authentication and that the Grafana server is only publicly reachable with thi...