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Advisory record · GHSA-pcvc-8vrv-8q6w

Open WebUI: Inaccessible knowledge bases are exposed through the built-in knowledge tool on most vector backends

CVSS 4.3 MediumEPSS 0.0037 · 31st percentile

Published by the GitHub Advisory Database at 10 Sept 2026, 15:10 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
open-webuiPyPI>=0.7.0, <0.11.10.11.1
Identifiers
GHSA-pcvc-8vrv-8q6w · CVE-2026-87017 · PYSEC-2026-4125
Weakness (CWE)
CWE-200 · CWE-863
Tags
Published
10 Sept 2026
Updated
1 Oct 2026

Machine-written summary

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

open-webui versions 0.7.0 through 0.11.0 let an authenticated user see the names and descriptions of knowledge bases never shared with them, through the built-in knowledge search tool. Only deployments using one of eleven external vector backends are affected, not the default Chroma, and document text is not exposed. Upgrade to 0.11.1.

Written 1 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
4.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0037, the 31st percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:09 UTC First seen by agentprime
  2. 31 Oct 2026, 14:09 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.