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Advisory record · GHSA-f776-fp4w-266c

Open WebUI vulnerable to blind server side request forgery (SSRF) via the PDF generate function

CVSS 4.3 MediumEPSS 0.0019 · 8th percentile

Published by the GitHub Advisory Database at 14 May 2026, 20:22 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
open-webuiPyPI<0.5.110.5.11
Identifiers
GHSA-f776-fp4w-266c · CVE-2026-45347 · PYSEC-2026-2723
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, the PyPI package open-webui, is vulnerable in versions before 0.5.11 to blind server-side request forgery through the PDF export function, where user-supplied content is interpreted as HTML and an image tag can trigger outbound GET requests. An attacker who can use the chat export feature can make the server send requests to arbitrary addresses, but the responses cannot be read. Upgrade to version 0.5.11 or later.

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
4.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0019, the 8th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 15 May 2026, 22:16 UTC Confirmed by NVD
  2. 31 Oct 2026, 15:02 UTC First seen by agentprime
  3. 31 Oct 2026, 15:02 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.