CVE-2023-6134

Keycloak: reflected xss via wildcard in oidc redirect_uri

State: Published
Severity: 4.6 Medium
Published: Dec 14, 2023
Updated: Sep 22, 2026
Reserved: Nov 14, 2023

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.

Scores

CVSS	Score	Vector	Source
3.1	4.6 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N	redhat

Weaknesses

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

Affected Products

Product	Versions
Red Hat build of Keycloak 22Red Hat	22.0.7-1 and laterNot affected
Red Hat build of Keycloak 22Red Hat	22-6 and laterNot affected
Red Hat build of Keycloak 22Red Hat	22-9 and laterNot affected
Red Hat build of Keycloak 22.0.7Red Hat
Red Hat Single Sign-On 7Red Hat
Red Hat Single Sign-On 7.6 for RHEL 7Red Hat	0:18.0.11-2.redhat_00003.1.el7sso and laterNot affected
Red Hat Single Sign-On 7.6 for RHEL 7Red Hat	0:18.0.12-1.redhat_00001.1.el7sso and laterNot affected
Red Hat Single Sign-On 7.6 for RHEL 8Red Hat	0:18.0.11-2.redhat_00003.1.el8sso and laterNot affected
Red Hat Single Sign-On 7.6 for RHEL 8Red Hat	0:18.0.12-1.redhat_00001.1.el8sso and laterNot affected
Red Hat Single Sign-On 7.6 for RHEL 9Red Hat	0:18.0.11-2.redhat_00003.1.el9sso and laterNot affected
Red Hat Single Sign-On 7.6 for RHEL 9Red Hat	0:18.0.12-1.redhat_00001.1.el9sso and laterNot affected
RHEL-8 based Middleware ContainersRed Hat	7.6-38 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat	7.6.6-2 and laterNot affected
RHEL-8 based Middleware ContainersRed Hat	7.6-41 and laterNot affected
Single Sign-On 7.6.6Red Hat

References

RHSA-2023:7854vendor-advisory
RHSA-2023:7855vendor-advisory
RHSA-2023:7856vendor-advisory
RHSA-2023:7857vendor-advisory
RHSA-2023:7858vendor-advisory
RHSA-2023:7860vendor-advisory
RHSA-2023:7861vendor-advisory
RHSA-2024:0798vendor-advisory
RHSA-2024:0799vendor-advisory
RHSA-2024:0800vendor-advisory
RHSA-2024:0801vendor-advisory
RHSA-2024:0804vendor-advisory
https://access.redhat.com/security/cve/CVE-2023-6134vdb-entry
RHBZ#2249673issue-tracking

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