Severity: low Affected versions:
- Apache TomEE (org.apache.openejb:openejb-core) 4.0.0-beta-1 through 4.7.5 - Apache TomEE (org.apache.tomee:openejb-core) 7.0.0-M1 before 10.0.0-M1 - Apache TomEE (org.apache.tomee:openejb-core) 10.0.0-M1 before 10.3.0 - Apache TomEE (org.apache.tomee:openejb-core) 11.0.0-M1 before 11.0.0-M2 Description: The bundled JAAS login modules leak whether a username exists and compare credentials in a non-constant-time manner. A remote unauthenticated attacker can enumerate valid accounts and may infer credential material through timing analysis. Users are recommended to upgrade to version 10.3.0 or 11.0.0-M2, which fix the issue. Credit: The Apache Software Foundation (finder) Claude Security (tool) Markus Jung (remediation developer) References: https://tomee.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-86532
