CVE-2026-3872

7.3 HIGH
Published: April 02, 2026 Modified: April 16, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:6475
Source: secalert@redhat.com
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6476
Source: secalert@redhat.com
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6477
Source: secalert@redhat.com
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6478
Source: secalert@redhat.com
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-3872
Source: secalert@redhat.com
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2445988
Source: secalert@redhat.com
Issue Tracking Vendor Advisory

6 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.3 / 10.0
EPSS (Exploit Probability)
0.0%
9th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

redhat