The version of Tomcat installed on the remote host is prior to 9.0.118. It is, therefore, affected by multiple vulnerabilities as referenced in the fixed_in_apache_tomcat_9.0.118_security-9 advisory.

  - DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This     issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1     through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported versions any also be     affect Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
    (CVE-2026-43512)

  - Improper Authorization vulnerability when multiple method constraints define an HTTP method for the same     extension in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from     10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through     7.0.109. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
    (CVE-2026-43515)

  - Observable Timing Discrepancy vulnerability when comparing AJP secret in Apache Tomcat. This issue affects     Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through     9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be     affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
    (CVE-2026-43514)

  - Improper Handling of Case Sensitivity vulnerability in LockOutRealm in Apache Tomcat. This issue affects     Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through     9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be     affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
    (CVE-2026-43513)

  - Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability     in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through     10.1.54, from 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through 7.0.109. Users are     recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118, which fix the issue. (CVE-2026-42498)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Apache Tomcat 9.0.0.M1 < 9.0.118 multiple vulnerabilities

critical Nessus Plugin ID 314334

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.4 Jun 10, 2026, 9:22 PM CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:POC/RL:OF/RC:C") CVSS temporal metrics ("CVSSv3 temporal vector" set to "CVSS:3.0/E:P/RL:O/RC:C") Exploit attributes ("Exploit available" set to "True") Exploit attributes ("Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin Feed: 202606102122
Version 1.3 May 27, 2026, 12:56 AM CVSS metrics ("CVSSv2 score" set to 10.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C") Plugin metadata Plugin Feed: 202605270056
Version 1.2 May 15, 2026, 6:15 PM Plugin metadata (Add IAVM Info) Plugin Feed: 202605151815
Version 1.1 May 12, 2026, 10:34 PM New Plugin Feed: 202605122234