CVE-2023-6927 MEDIUM

CVE-2023-6927: Keycloak: open redirect via "form_post.jwt" jarm response mode

Vendor Red Hat
Product Red Hat build of Keycloak 22.0.8
Weakness CWE-601 · Open redirect
Published December 18, 2023
Last update November 11, 2025
View on NVD All CVEs

CVSS base score

4.6/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

A flaw was found in Keycloak. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.

Key dates

02Disclosure timeline

December 18, 2023 CVE published
November 11, 2025 Record updated