GHSA-9vm7-v8wj-3fqwMediumCVSS 4.6

keycloak-core: open redirect via "form_post.jwt" JARM response mode

Published
January 23, 2024
Last Modified
December 26, 2024

🔗 CVE IDs covered (1)

CVE-2023-6927 →

📋 Description

An incomplete fix was found in Keycloak Core patch. An attacker can steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt". It is observed that changing the response_mode parameter in the original proof of concept from "form_post" to "form_post.jwt" can bypass the security patch implemented to address CVE-2023-6134.

🎯 Affected products1

  • maven/org.keycloak:keycloak-core:< 23.0.4

🔗 References (12)