CVE-2021-20202: Red Hat Keycloak

High severity, CVSS 7.3. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw was found in keycloak. Directories can be created prior to the Java process creating them in the temporary directory, but with wider user permissions, allowing the attacker to have access to the contents that keycloak stores in this directory. The highest threat from this vulnerability is to data confidentiality and integrity.

Affected products

• Red Hat Keycloak: before 13.0.0 (fixed in 13.0.0)

Published 2021-05-12. Last modified 2026-06-17.