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Advisory record · GHSA-rffm-9q57-q649

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

CVSS 4.1 MediumEPSS 0.0035 · 28th percentile

Published by the GitHub Advisory Database at 4 Aug 2026, 19:54 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
open-webuiPyPI>=0.6.34, <0.11.00.11.0
Identifiers
GHSA-rffm-9q57-q649 · CVE-2026-70480 · PYSEC-2026-3651
Weakness (CWE)
CWE-918
Tags
Published
4 Aug 2026
Updated
10 Aug 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Open WebUI versions from 0.6.34 before 0.11.0 are vulnerable to client-side server-side request forgery through Vega and Vega-Lite chart blocks, which the browser renders without a restricted resource loader. An attacker who can post chat content that another user views can make that user's browser send GET requests to targets the victim can reach and read some same-origin or CORS-permissive responses. Upgrade to Open WebUI 0.11.0 or later.

Written 5 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
4.1 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0035, the 28th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:40 UTC First seen by agentprime
  2. 31 Oct 2026, 14:40 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.