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Vulnerability record · CVE-2024-4629 · published 3 September 2024

CVE-2024-4629: Redhat keycloak vulnerability

Redhat · Keycloak

A vulnerability was found in Keycloak. This flaw allows attackers to bypass brute force protection by exploiting the timing of login attempts. By initiating multiple login requests simultaneously, attackers can exceed the configured limits for failed attempts before the system locks them out. This timing loophole enables attackers to make more guesses at passwords than intended, potentially compromising account security on affected systems.

6.5 CVSS 3.1 Medium EPSS 0.79% · top 45.6% CWE-837 · CWE-837
6.5CVSS 3.1 base score
0.79%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
11References
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in Keycloak. This flaw allows attackers to bypass brute force protection by exploiting the timing of login attempts. By initiating multiple login requests simultaneously, attackers can exceed the configured limits for failed attempts before the system locks them out. This timing loophole enables attackers to make more guesses at passwords than intended, potentially compromising account security on affected systems.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2024:6493 Vendor Advisory
https://access.redhat.com/errata/RHSA-2024:6494 Vendor Advisory
https://access.redhat.com/errata/RHSA-2024:6495 Vendor Advisory
https://access.redhat.com/errata/RHSA-2024:6497 Vendor Advisory
https://access.redhat.com/errata/RHSA-2024:6499 Vendor Advisory
https://access.redhat.com/errata/RHSA-2024:6500 Vendor Advisory
https://access.redhat.com/errata/RHSA-2024:6501 Vendor Advisory
https://access.redhat.com/security/cve/CVE-2024-4629 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2276761 Issue TrackingVendor Advisory
https://github.com/hnsecurity/vulns/blob/main/HNS-2024-09-Keycloak.md
https://security.humanativaspa.it/an-analysis-of-the-keycloak-authentication-system/

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Source: NIST National Vulnerability Database (record CVE-2024-4629), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.