High 8.1Published Aug 4, 2026

CVE-2026-70494Open WebUI: A folder write-collaborator can permanently delete the owner's chats by deleting a shared subfolder

Updated under an hour ago (2026-10-19 08:00 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for open-webui

Exploited in the last 30 days

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.

CVSS: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness (CWE): CWE-862, CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

open-webui open-webui open_webui:open_webui (from the name)	from 0.10.0, < 0.11.0	CNA record
openwebui open_webui openwebui:open_webui	from 0.10.0 before 0.11.0	NVD

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-3cg5-48j3-v4gvx-refsource-confirm, patch, vendor-advisory
https://github.com/open-webui/open-webui/pull/27003x-refsource-misc, patch, vendor-advisory
https://github.com/open-webui/open-webui/commit/915ef7d0798d3175819cedbb2f62d7bf0db78c98x-refsource-misc, patch
https://github.com/open-webui/open-webui/releases/tag/v0.11.0x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.