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Advisory record · GHSA-8w7q-q5jp-jvgx

Open WebUI has a Server-Side Request Forgery (SSRF) bypass in `validate_url`

CVSS 8.5 HighEPSS 0.0029 · 22nd percentile

Published by the GitHub Advisory Database at 14 May 2026, 20:27 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
open-webuiPyPI<0.9.50.9.5
Identifiers
GHSA-8w7q-q5jp-jvgx · CVE-2026-45400 · PYSEC-2026-2715
Weakness (CWE)
CWE-918
Tags
Published
14 May 2026
Updated
13 Jul 2026

Machine-written summary

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

Open WebUI (PyPI package open-webui) versions before 0.9.5 are vulnerable to a server-side request forgery bypass in the validate_url function. The URL validation reads the hostname with urlparse, while the requests library that sends the request resolves a crafted URL to a different, internal host, so an authenticated user could make the server request internal addresses. Upgrade to version 0.9.5 or later, which contains the fix.

Written 6 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
8.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0029, the 22nd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 15 May 2026, 21:16 UTC Confirmed by NVD
  2. 31 Oct 2026, 14:59 UTC First seen by agentprime
  3. 31 Oct 2026, 14:59 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.