Improper Authorization Affecting tomcat9 package, versions <9.0.115-1ubuntu0.1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.14% (63rd percentile)

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  • Snyk IDSNYK-UBUNTU2604-TOMCAT9-16699753
  • published1 Jun 2026
  • disclosed12 May 2026

Introduced: 12 May 2026

CVE-2026-43515  (opens in a new tab)
CWE-285  (opens in a new tab)

How to fix?

Upgrade Ubuntu:26.04 tomcat9 to version 9.0.115-1ubuntu0.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat9 package and not the tomcat9 package as distributed by Ubuntu. See How to fix? for Ubuntu:26.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1