CVE-2026-70494High· 8.1▾ TwilightOpen 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 sha…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 44.6 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
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.
open_webui >= 0.10.0, < 0.11.0Upgrade past the affected range:
open_webui 0.11.0Affected packages:
open-webui >= 0.10.0, < 0.11.0Patched in:
open-webui 0.11.0Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-70483Low· 3.1Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform
CVE-2026-70488Medium· 4.3Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform
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