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Advisory record · GHSA-w97f-w3hq-36g2

Keycloak Denial of Service vulnerability

CVSS 7.5 HighEPSS 0.0074 · 54th percentile

Published by the GitHub Advisory Database at 10 Sept 2024, 18:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.keycloak:keycloak-coreMaven<24.0.024.0.0
Identifiers
GHSA-w97f-w3hq-36g2 · CVE-2023-6841
Weakness (CWE)
CWE-231
Tags
Published
10 Sept 2024
Updated
10 Sept 2026

Machine-written summary

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

Keycloak (org.keycloak:keycloak-core) versions before 24.0.0 are vulnerable to denial of service. An attacker who can send repeated HTTP requests can exhaust server resources, because attributes per object are not limited and responses can contain long attribute values. Upgrade to Keycloak 24.0.0 or later, which adds the User Profile feature that addresses the issue.

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
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (redhat)
  • CISA KEV Not listed.
  • EPSS 0.0074, the 54th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 10 Sept 2024, 16:15 UTC Confirmed by the CVE List
  2. 10 Sept 2024, 17:15 UTC Confirmed by NVD
  3. 31 Oct 2026, 14:17 UTC First seen by agentprime
  4. 31 Oct 2026, 14:17 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.