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Advisory record · GHSA-7rw5-9f7q-xj36

Open WebUI: Account enumeration via observable login timing discrepancy

CVSS 5.3 MediumEPSS 0.0041 · 35th percentile

Published by the GitHub Advisory Database at 24 Jul 2026, 16:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
open-webuiPyPI<0.10.00.10.0
Identifiers
GHSA-7rw5-9f7q-xj36 · CVE-2026-59218 · PYSEC-2026-3594
Weakness (CWE)
CWE-208
Tags
Published
24 Jul 2026
Updated
4 Aug 2026

Machine-written summary

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

Open WebUI versions before 0.10.0 are vulnerable. The signin endpoint responds noticeably faster for email addresses that are not registered than for registered ones, so an unauthenticated attacker can determine which accounts exist by measuring response times. Upgrade to Open WebUI 0.10.0 or later, which runs a password check on every attempt so timing no longer reveals whether an account exists.

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
5.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0041, the 35th percentile, on 5 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.