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.

INFO

Published Date :

2026-04-02T12:37:30.633Z

Last Modified :

2026-04-07T14:53:06.658Z

Source :

redhat
AFFECTED PRODUCTS

The following products are affected by CVE-2026-3872 vulnerability.

Vendors Products
Redhat
  • Build Keycloak
  • Build Of Keycloak
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-3872.

URL Resource
https://access.redhat.com/errata/RHSA-2026:6475 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:6476 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:6477 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:6478 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2026-3872 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2445988 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-3872 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-3872 cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
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Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact