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Advisory record · GHSA-j628-q885-8gr5

Keycloak vulnerable to log Injection during WebAuthn authentication or registration

CVSS 5.3 MediumEPSS 0.010 · 63rd percentile

Published by the GitHub Advisory Database at 17 Apr 2024, 18:24 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.keycloak:keycloak-servicesMaven<22.0.9 || >=23.0.0, <23.0.522.0.9, 23.0.5
Identifiers
GHSA-j628-q885-8gr5 · CVE-2023-6484
Weakness (CWE)
CWE-117
Tags
Published
17 Apr 2024
Updated
21 Jul 2026

Machine-written summary

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

Keycloak's org.keycloak:keycloak-services package is affected in versions below 22.0.9 and from 23.0.0 up to 23.0.5. During WebAuthn ("Security Key") setup or login, error text from the browser is written to the server log without escaping, so an attacker can inject forged log entries. Upgrade to 22.0.9 or 23.0.5, depending on your release line.

Written 2 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:N/I:L/A:N CNA (redhat)
  • CISA KEV Not listed.
  • EPSS 0.010, the 63rd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 17 Apr 2024, 10:23 UTC Published by the maintainers as a GitHub repository advisory
  2. 31 Oct 2026, 14:19 UTC First seen by agentprime
  3. 31 Oct 2026, 14:19 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.