CVE-2023-6134

Aliases:GHSA-cvg2-7c3j-g36j
Advisory lineage Upstream: 0 Downstream: 6
Modified
Published: 14 Dec 2023, 21:42
Last modified:25 Feb 2026, 18:19

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.4 MEDIUM
v3.1 (nvd)
EPSS Score
2.47% LOW
2% probability +0.57%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

14 Dec 2023, 21:42
Published
Vulnerability first disclosed
25 Feb 2026, 18:19
Last Modified
Vulnerability information updated

Description

A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the result of an incomplete fix for CVE-2020-10748.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.6CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
  • v3.1•MEDIUM•Score: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Trends

Current EPSS score: 2.47%• Percentile: 86%

Techniques & Countermeasures

  • CWE-79•Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

    The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Affected Systems

  • org.keycloak•keycloak-services

    < 23.0.3

  • redhat•keycloak

    < 22.0.7

  • redhat•openshift_container_platform

    4.11 | 4.12

  • redhat•openshift_container_platform_for_power

    4.9 | 4.10

  • redhat•openshift_container_platform_ibm_z_systems

    4.9 | 4.10

  • redhat•single_sign-on

    < 7.6 | na

References (18)