CVE-2026-4325 MEDIUM

CVE-2026-4325: Keycloak: keycloak: replay of action tokens via improper handling of single-use entries

Vendor Red Hat
Product Red Hat build of Keycloak 26.2.15
Weakness CWE-653
Published April 2, 2026
Last update April 7, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

What the vulnerability does

01Description

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an attacker to delete arbitrary single-use entries, which can enable the replay of consumed action tokens, such as password reset links. This could lead to unauthorized access or account compromise.

Key dates

02Disclosure timeline

April 2, 2026 CVE published
April 7, 2026 Record updated