Medium 4.1Published Aug 4, 2026

CVE-2026-70480Open WebUI: Client-side SSRF via unrestricted external resource loading in Vega/Vega-Lite chart rendering

Updated under an hour ago (Oct 27, 2026, 2:30 AM ET)

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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 0.6.34 until 0.11.0, Open WebUI renders vega and vega-lite fenced code blocks in chat content by building a Vega view in the viewer browser without a restricted resource loader. Any user who can place such a block where another user will see it can make that user browser issue attacker-chosen outbound GET requests and read responses from same-origin or CORS-permissive targets into the rendered page. This issue is fixed in 0.11.0.

CVSS: 4.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/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: 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 0.6.34, < 0.11.0	CNA record
openwebui open_webui openwebui:open_webui	from 0.6.34 before 0.11.0	NVD

References

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649	x-refsource-confirm, exploit, patch, vendor-advisory
https://github.com/open-webui/open-webui/pull/26806	x-refsource-misc, patch, vendor-advisory
https://github.com/open-webui/open-webui/commit/5278eb906ebecefc6538a19bc86df09d997e43e6	x-refsource-misc, patch
https://github.com/open-webui/open-webui/releases/tag/v0.11.0	x-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.