Apache Tomcat Security Update – 30 July 2026

Apache has released a security update to address a vulnerability affecting Apache Tomcat.

The addressed vulnerability could allow the attacker to perform denial of service attacks on the affected system.

The addressed vulnerability:

Apache Tomcat Uncontrolled Resource Consumption Vulnerability (CVE-2026- 66299):

  • CVSS: 7.5
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Consequences: Denial-of-Service
Vulnerabilities

CVE-2026-66299

Mitigations

The enterprise should deploy this patch as soon as the testing phase is completed.

Apache Tomcat Security Advisory

References