CVE-2021-42340

The CVE-2021-42340 issue is a memory leak in Apache Tomcat caused by the upgrade HTTP metric collector not releasing WebSocket resources after close. Affected versions include Tomcat 8.5.60–8.5.71, 9.0.40–9.0.53, 10.0.0-M1–10.0.11, and 10.1.0-M1–10.1.0-M5. Over time, this leak can lead to OutOfMe...

CVE-2022-45143

CVE-2022-45143 affects Apache Tomcat: the JsonErrorReportValve failed to escape type, message, or description fields, which could be constructed from user data and allow manipulation of JSON output. Affected versions include Tomcat 8.5.83, 9.0.40–9.0.68, and 10.1.0-M1–10.1.1. The issue’s impact i...

CVE-2025-55754

CVE-2025-55754 affects Apache Tomcat: improper neutralization of ANSI escape sequences in log messages could enable console/clipboard manipulation via crafted URLs. Affected: Tomcat 11.x (11.0.0-M1 to 11.0.10), 10.x (10.1.0-M1 to 10.1.44), 9.x (9.0.40 to 9.0.108), plus some EOL versions. Remediat...

CVE-2026-34483

CVE-2026-34483 is an Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache Tomcat. Affected versions: Tomcat 11.0.0-M1 through 11.0.20, 10.1.0-M1 through 10.1.53, and 9.0.40 through 9.0.116. Exploitation concerns are not detailed in the provided docum...