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EUVD-2026-330464

fkie_cve-2026-52800

Gogs is an open source self-hosted Git service. Prior to 0.14.3, organization team member management can be performed via GET requests without CSRF protection. If a victim who is an organization owner is logged in and is tricked into visiting a crafted link, an attacker-controlled user can be added to the Owners team. As a result, the attacker gains organization owner–equivalent privileges. This vulnerability is fixed in 0.14.3.

GHSA-pwx3-qcgw-vh7h — Gogs Vulnerable to CSRF Leading to Organization Owner Takeover

Affected: Go: gogs.io/gogs

## Summary

In **Gogs 0.14.1**, organization team member management can be performed via **GET requests without CSRF protection**. If a victim who is an **organization owner** is logged in and is tricked into visiting a crafted link, an attacker-controlled user can be added to the **Owners** team. As a result, the attacker gains **organization owner–equivalent privileges**.

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## Description

When a victim is logged in as an organization owner, **team member management endpoints are exposed via routes reachable by GET requests**, allowing state-changing operations without a CSRF token.

### Team action route allows GET

`internal/cmd/web.go:390`

```go m.Route("/teams/:team/action/:action", "GET,POST", org.TeamsAction) ```

### CSRF validation is applied only to POST requests

Because the global CSRF check is limited to POST requests, state-changing operations reached via GET bypass CSRF protection entirely.

`internal/context/auth.go:56-61`

```go if !options.SignOutRequired && !options.DisableCSRF && c.Req.Method == "POST" && !isAPIPath(c.Req.URL.Path) { csrf.Validate(c.Context, c.csrf) if c.Written() { return } } ```

### TeamsAction performs state changes regardless of HTTP method

`TeamsAction` does not branch on the HTTP method. Instead, it performs state-changing operations (such as adding or removing members) based solely on query parameters (`uid`, `uname`) and the `:action` path parameter. Since the route explicitly allows GET, the `add` a…

WID-SEC-W-2026-2013 — Gogs: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Gogs ausnutzen, um erweiterte Berechtigungen zu erlangen, beliebigen Code auszuführen – sogar mit erweiterten Berechtigungen, was zur vollständigen Kontrolle über das System führen kann –, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, Cross-Site-Scripting-Angriffe durchzuführen, Benutzer auf bösartige Websites umzuleiten oder einen Denial-of-Service-Zustand zu verursachen.