CVE-2026-4366
MediumCVSS 5.8Exploitation Probability (EPSS)
Low risk11th percentile - higher than 11% of all known CVEs
Summary
A flaw was identified in Keycloak, an identity and access management solution, where it improperly follows HTTP redirects when processing certain client configuration requests. This behavior allows an attacker to trick the server into making unintended requests to internal or restricted resources.
Risk Assessment
This issue may lead to information disclosure and enable attackers to map internal network infrastructure, posing a significant security risk to the organization.
Recommendation
It is recommended to update Keycloak to the latest version to mitigate this vulnerability and review server configurations to restrict access to sensitive resources.
Original NVD description (English source)
A flaw was identified in Keycloak, an identity and access management solution, where it improperly follows HTTP redirects when processing certain client configuration requests. This behavior allows an attacker to trick the server into making unintended requests to internal or restricted resources. As a result, sensitive internal services such as cloud metadata endpoints could be accessed. This issue may lead to information disclosure and enable attackers to map internal network infrastructure.