CVE-2026-3872

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-3872
A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers (URIs) that use a wildcard. A successful attack may lead to the theft of an access token, resulting in information disclosure.

7.3 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.1 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://access.redhat.com/errata/RHSA-2026:6475 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6476 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6477 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6478 Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-3872 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2445988 Issue Tracking Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:26.2:*:*:*:text-only:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:26.2.15:*:*:*:text-only:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:26.4:*:*:*:text-only:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:26.4.11:*:*:*:text-only:*:*:*
History

16 Apr 2026, 20:52

Type Values Removed Values Added
CPE cpe:2.3:a:redhat:build_of_keycloak:26.2:*:*:*:text-only:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:26.4:*:*:*:text-only:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:26.2.15:*:*:*:text-only:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*
cpe:2.3:a:redhat:build_of_keycloak:26.4.11:*:*:*:text-only:*:*:*
First Time Redhat
Redhat build Of Keycloak
References () https://access.redhat.com/errata/RHSA-2026:6475 - () https://access.redhat.com/errata/RHSA-2026:6475 - Vendor Advisory
References () https://access.redhat.com/errata/RHSA-2026:6476 - () https://access.redhat.com/errata/RHSA-2026:6476 - Vendor Advisory
References () https://access.redhat.com/errata/RHSA-2026:6477 - () https://access.redhat.com/errata/RHSA-2026:6477 - Vendor Advisory
References () https://access.redhat.com/errata/RHSA-2026:6478 - () https://access.redhat.com/errata/RHSA-2026:6478 - Vendor Advisory
References () https://access.redhat.com/security/cve/CVE-2026-3872 - () https://access.redhat.com/security/cve/CVE-2026-3872 - Vendor Advisory
References () https://bugzilla.redhat.com/show_bug.cgi?id=2445988 - () https://bugzilla.redhat.com/show_bug.cgi?id=2445988 - Issue Tracking, Vendor Advisory

02 Apr 2026, 17:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:6475 -
  • () https://access.redhat.com/errata/RHSA-2026:6476 -

02 Apr 2026, 14:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:6477 -
  • () https://access.redhat.com/errata/RHSA-2026:6478 -

02 Apr 2026, 13:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-02 13:16

Updated : 2026-04-16 20:52

NVD link : CVE-2026-3872

Mitre link : CVE-2026-3872

CVE.ORG link : CVE-2026-3872

JSON object : View

Products Affected

redhat

  • build_of_keycloak
CWE
CWE-601

URL Redirection to Untrusted Site ('Open Redirect')