Improper Authorization Affecting org.apache.tomcat:catalina package, versions [,9.0.118)[10.0.0-M1,10.1.55)[11.0.0-M1,11.0.22)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Improper Authorization vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-JAVA-ORGAPACHETOMCAT-16690891
- published14 May 2026
- disclosed12 May 2026
- creditUnknown
Introduced: 12 May 2026
CVE-2026-43515 (opens in a new tab)How to fix?
Upgrade org.apache.tomcat:catalina to version 9.0.118, 10.1.55, 11.0.22 or higher.
Overview
org.apache.tomcat:catalina is a Servlet Engine Core Classes and Standard implementations.
Affected versions of this package are vulnerable to Improper Authorization in the processing of security constraints when multiple method constraints define an HTTP method for the same extension. An attacker can gain unauthorized access to protected resources by crafting requests that exploit the improper application of these constraints.