GHSA-wcvj-vpvw-9rr5MediumCVSS 4.2

Keycloak Services has Improper Validation of Consistency within Input

Published
May 27, 2026
Last Modified
July 1, 2026

🔗 CVE IDs covered (1)

📋 Description

A flaw was found in Keycloak, an open-source identity and access management solution. When a client application is configured to accept broad redirect Uniform Resource Identifiers (URIs), a remote attacker can manipulate the authentication process by crafting a special web address. If a user clicks this link, the client application might incorrectly prioritize attacker-controlled information over legitimate data. This vulnerability, known as HTTP parameter pollution, could allow an attacker to bypass security measures or gain unauthorized access to resources.

🎯 Affected products2

  • maven/org.keycloak:keycloak-services:>= 26.5.0, <= 26.6.4
  • maven/org.keycloak:keycloak-services:<= 26.4.7

🔗 References (9)