CVE-2026-34487

Description

Insertion of Sensitive Information into Log File vulnerability in the cloud membership for clustering component of Apache Tomcat exposed the Kubernetes bearer token. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.13 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.

Affected packages (7)

• Bitnami/tomcat>= 9.0.13, < 9.0.117, >= 10.1.0, < 10.1.54, >= 11.0.0, < 11.0.21
• Debian/tomcat10from 0
• Debian/tomcat11from 0
• Debian/tomcat9from 0, < 9.0.70-2
• Maven/org.apache.tomcat.embed:tomcat-embed-core>= 9.0.13, < 9.0.117
• Maven/org.apache.tomcat:tomcat>= 9.0.13, < 9.0.117
• Maven/org.apache.tomcat:tomcat-catalina>= 9.0.13, < 9.0.117

CVSS scores

References (5)

• ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-34487
• ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-34487
• PATCHhttps://github.com/apache/tomcat
• WEBhttps://lists.apache.org/thread/4xpkwolpkrj8v5xzp5nyovtlqp3y850h
• WEBhttp://www.openwall.com/lists/oss-security/2026/04/09/28