Security Alert (A26-09-44): Multiple Vulnerabilities in Apache Tomcat


 

Published on: 30 September 2026

Description:

The Apache Software Foundation released security updates to address multiple vulnerabilities in the Apache Tomcat. A remote attacker could exploit the vulnerabilities by sending a specially crafted request to the affected systems.

 

Affected Systems:

  • Apache Tomcat 9.0.0.M1 to 9.0.122
  • Apache Tomcat 10.1.0-M1 to 10.1.60
  • Apache Tomcat 11.0.0-M1 to 11.0.26

For detailed information of the affected systems, please refer to the corresponding security advisories at vendor's website.

 

Impact:

Successful exploitation of the vulnerabilities could lead to denial of service, security restriction bypass or tampering on an affected system.

 

Recommendation:

The Apache Software Foundation has released new versions of the software to address the issues and they can be downloaded at the following URLs:
https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.122
https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.60
https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.26

 

More Information:

  • https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.60
  • https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.26
  • https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.122
  • https://www.hkcert.org/security-bulletin/apache-tomcat-multiple-vulnerabilities_20260929
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-73581
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-75973
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-76183
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-77756
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-77762
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-77791
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-78383
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-78437
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-79677
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-86248
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-86350
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-87022


Tag: Apache , Tomcat
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