Improper Authentication 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.
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Test your applications- Snyk IDSNYK-JAVA-ORGAPACHETOMCAT-16691234
- published14 May 2026
- disclosed12 May 2026
- creditUnknown
Introduced: 12 May 2026
CVE-2026-43512 (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 Authentication when DIGEST authentication is configured. An attacker can gain unauthorized access by providing any unknown username, as the system will incorrectly authenticate the user.