Low 3.1Published Aug 4, 2026

CVE-2026-70483Open WebUI: Any authenticated user can cancel another user's chat generation via the chat delete endpoint

Updated under an hour ago (2026-10-19 08:23 UTC)

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It affects open-webui and 1 other product. Add what you run to find out whether that includes you.

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 0.9.6 until 0.11.0, DELETE /api/v1/chats/{id} cancelled a chat's in-flight tasks before checking whether the caller could delete that chat. Any authenticated user who knew another user's chat id could abort that user's running model response, title generation, or tag generation, even though the delete was refused and no chat data was deleted, modified, or disclosed. This issue is fixed in 0.11.0.

CVSS: 3.1 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-862
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 0.9.6, < 0.11.0	CNA record
openwebui open_webui openwebui:open_webui	from 0.9.6 before 0.11.0	NVD

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-3vf6-64vr-3g56x-refsource-confirm, exploit, patch, vendor-advisory
https://github.com/open-webui/open-webui/pull/27006x-refsource-misc, patch, vendor-advisory
https://github.com/open-webui/open-webui/commit/4f93c3e36c1734342a32c312bdb0516c66d8e93cx-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.