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EUVD-2026-268873

2026-10-16T03:23:36.380760+00:00

EUVD-2026-268873

fkie_cve-2026-25232

2026-10-16T03:23:36.380796+00:00

Gogs is an open source self-hosted Git service. Versions 0.13.4 and below have an access control bypass vulnerability which allows any repository collaborator with Write permissions to delete protected branches (including the default branch) by sending a direct POST request, completely bypassing the branch protection mechanism. This vulnerability in the DeleteBranchPost function eenables privilege escalation from Write to Admin level, allowing low-privilege users to perform dangerous operations that should be restricted to administrators only. Although Git Hook layer correctly prevents protected branch deletion via SSH push, the web interface deletion operation does not trigger Git Hooks, resulting in complete bypass of protection mechanisms. In oder to exploit this vulnerability, attackers must have write permissions to the target repository, protected branches configured to the target repository and access to the Gogs web interface. This issue has been fixed in version 0.14.1.

GHSA-2c6v-8r3v-gh6p — Gogs has a Protected Branch Deletion Bypass in Web Interface

2026-10-16T03:23:36.380841+00:00

Affected: Go: gogs.io/gogs

## Summary

An access control bypass vulnerability in Gogs web interface allows any repository collaborator with Write permissions to delete protected branches (including the default branch) by sending a direct POST request, completely bypassing the branch protection mechanism. This vulnerability enables privilege escalation from Write to Admin level, allowing low-privilege users to perform dangerous operations that should be restricted to administrators only.

Although Git Hook layer correctly prevents protected branch deletion via SSH push, the web interface deletion operation does not trigger Git Hooks, resulting in complete bypass of protection mechanisms.

## Details

### Affected Component

- **File**: `internal/route/repo/branch.go` - **Function**: `DeleteBranchPost` (lines 110-155) - **Route Configuration**: `internal/cmd/web.go:589` ```go m.Post("/delete/*", reqSignIn, reqRepoWriter, repo.DeleteBranchPost) ```

### Root Cause

The `DeleteBranchPost` function performs the following checks when deleting a branch: 1. ✅ User authentication (`reqSignIn`) 2. ✅ Write permission check (`reqRepoWriter`) 3. ✅ Branch existence verification 4. ✅ CommitID matching (optional parameter) 5. ❌ **Missing protected branch check** 6. ❌ **Missing default branch check**

While the UI layer (`internal/route/repo/issue.go:646-658`) correctly checks protected branch status and hides the delete button, attackers can directly construct POST requests to bypass UI restrictions.

### Vulne…

WID-SEC-W-2026-0423 — Gogs: Mehrere Schwachstellen

2026-10-16T03:23:36.380909+00:00

Ein Angreifer kann mehrere Schwachstellen in Gogs ausnutzen, um Dateien zu manipulieren, Sicherheitsmaßnahmen zu umgehen oder Administratorrechte zu erlangen.