AUGUST 16, 2026
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Case File

CVE-2026-70494

HIGH · CVSS 8.1 EPSS 0.30% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-04 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

The Open WebUI platform versions 0.10.0 to 0.11.0 are vulnerable due to improper authorization checks in the DELETE /api/v1/folders/{id} handler, allowing users with write access to delete chats and messages owned by others. This vulnerability could lead to significant data loss for folder owners, as collaborators can permanently remove or relocate content without proper permissions. Organizations using affected versions should prioritize upgrading to 0.11.0 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-70494
Severity
HIGH
CVSS
8.1
EPSS
0.30%

Original NVD Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.0, the DELETE /api/v1/folders/{id} handler in backend/open_webui/routers/folders.py allowed a user granted write access to a shared chat folder to permanently delete chats and messages belonging to the folder owner. The cascade following the authorization check is bound to the folder owner's id, but the subfolder check accepted any inherited write grant instead of requiring ownership or administrator status. A collaborator can destroy the owner's subtree or force-move chats out of it when delete_contents=false. This issue is fixed in 0.11.0.