{"id":"CVE-2026-34487","aliases":["BIT-tomcat-2026-34487","GHSA-x4m4-345f-5h5g"],"url":"https://o3.security/vulnerability/CVE-2026-34487","summary":"Apache Tomcat: Cloud membership for clustering component exposed the Kubernetes bearer token","details":"Insertion of Sensitive Information into Log File vulnerability in the cloud membership for clustering component of Apache Tomcat exposed the Kubernetes bearer token.\n\nThis 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.\n\nUsers are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.","published":"2026-04-09T19:36:12.048Z","modified":"2026-09-11T08:25:51.806825759Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":{"score":0.00447,"percentile":0.37179,"asOf":"2026-08-27"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-tribes","fixedVersion":"9.0.117"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-tribes","fixedVersion":"10.1.54"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-tribes","fixedVersion":"11.0.21"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","fixedVersion":"9.0.117"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","fixedVersion":"10.1.54"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","fixedVersion":"11.0.21"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"9.0.117"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"10.1.54"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"11.0.21"}],"fix":{"url":"https://github.com/apache/tomcat/commit/301bc6efbf72feb14dacfdfa3f50372182736150","label":"apache/tomcat@301bc6e"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/04/09/28"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34487.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/4xpkwolpkrj8v5xzp5nyovtlqp3y850h"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34487"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/301bc6efbf72feb14dacfdfa3f50372182736150"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/5eff2a773b8b728083e5195b3183df1b9e12a03d"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/f593292a082e5ef9336a8db2b4b522f7f3e36976"},{"type":"PACKAGE","url":"https://github.com/apache/tomcat"},{"type":"WEB","url":"https://tomcat.apache.org/security-10.html"},{"type":"WEB","url":"https://tomcat.apache.org/security-11.html"},{"type":"WEB","url":"https://tomcat.apache.org/security-9.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-11T08:25:51.806825759Z"}}