High 7.1Published Aug 4, 2026

CVE-2026-70485Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform.

Updated under an hour ago (2026-10-19 07:00 UTC)

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It affects openwebui open_webui. 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 openwebui open_webui

Exploited in the last 30 days

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, Open WebUI checked whether a user-supplied URL destination was globally routable by applying ipaddress.is_global to the literal IPv6 address without examining IPv4 addresses embedded in transition encodings. On a deployment with a NAT64 gateway, any verified user could wrap an internal or cloud-metadata IPv4 address in the NAT64 well-known prefix, pass the filter, and receive the internal response body through RAG URL ingestion, URL-to-markdown conversion, or web-search content retrieval. This issue is fixed in 0.11.0.

CVSS: 7.1 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Sep 18, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

openwebui open_webui openwebui:open_webui	from 0.9.0 before 0.11.0	NVD

References

https://github.com/open-webui/open-webui/commit/1717b493d83c86afa82aa8bc50139250852dd2f3patch
https://github.com/open-webui/open-webui/releases/tag/v0.11.0release-notes
https://github.com/open-webui/open-webui/security/advisories/GHSA-8x5v-cpv7-8jjpexploit, vendor-advisory

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.