Severity: moderate Affected versions:
- Apache TomEE (org.apache.tomee:tomee-embedded) 7.0.0-M1 before 10.0.0-M1 - Apache TomEE (org.apache.tomee:tomee-embedded) 10.0.0-M1 before 10.3.0 - Apache TomEE (org.apache.tomee:tomee-embedded) 11.0.0-M1 before 11.0.0-M2 Description: The embedded server generates HTTP session identifiers with a non-cryptographic random number generator by default. A remote attacker who observes a session identifier can predict the identifiers issued to other users and hijack their sessions, if the application relies on HTTP sessions for authentication. 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-2026-111259
