{"id":"CVE-2023-46589","aliases":["BIT-tomcat-2023-46589","GHSA-fccv-jmmp-qg76"],"url":"https://o3.security/vulnerability/CVE-2023-46589","summary":"Apache Tomcat: HTTP request smuggling via malformed trailer headers","details":"Improper Input Validation vulnerability in Apache Tomcat. Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82, and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Older, EOL versions may also be affected.\n\nUsers are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.","published":"2023-11-28T15:31:52.366Z","modified":"2026-10-28T02:30:50.921976448Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"11.0.0-M11"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"10.1.16"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"9.0.83"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"8.5.96"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"11.0.0-M11"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"10.1.16"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"9.0.83"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"8.5.96"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote","fixedVersion":"11.0.0-M11"}],"fix":{"url":"https://github.com/apache/tomcat/commit/6f181e1062a472bc5f0234980f66cbde42c1041b","label":"apache/tomcat@6f181e1"},"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/01/msg00001.html"},{"type":"WEB","url":"https://www.openwall.com/lists/oss-security/2023/11/28/2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/46xxx/CVE-2023-46589.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/0rqq6ktozqc42ro8hhxdmmdjm1k1tpxr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-46589"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20231214-0009/"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/6f181e1062a472bc5f0234980f66cbde42c1041b"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/7a2d8818fcea0b51747a67af9510ce7977245ebd"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/aa92971e879a519384c517febc39fd04c48d4642"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/b5776d769bffeade865061bc8ecbeb2b56167b08"},{"type":"PACKAGE","url":"https://github.com/apache/tomcat"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20231214-0009"},{"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-8.html"},{"type":"WEB","url":"https://tomcat.apache.org/security-9.html"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2023/11/28/2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:50.921976448Z"}}