{"id":"BIT-tomcat-2026-42498","summary":"Apache Tomcat: WebSocket authentication header exposure","details":"Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability in Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0 through 11.0.21, from 10.1.0 through 10.1.54, from 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through 7.0.109.\n\nUsers are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118, which fix the issue.","aliases":["CVE-2026-42498","GHSA-fv25-8xcx-gqjc"],"modified":"2026-05-18T20:56:05.210993176Z","published":"2026-05-14T11:56:44.150Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:apache:tomcat:*:*:*:*:*:maven:*:*"]},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/05/12/14"},{"type":"WEB","url":"https://lists.apache.org/thread/n61zwf75jrv09rz90j4jssncm244bwdb"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42498"}],"affected":[{"package":{"name":"tomcat","ecosystem":"Bitnami","purl":"pkg:bitnami/tomcat"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.0.0"},{"fixed":"10.1.55"},{"introduced":"11.0.0"},{"fixed":"11.0.22"},{"introduced":"9.0.0"},{"fixed":"9.0.118"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/tomcat/BIT-tomcat-2026-42498.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}],"schema_version":"1.7.5"}