{"id":"CVE-2023-46589","state":"PUBLISHED","title":"Apache Tomcat: HTTP request smuggling via malformed trailer headers","description":"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 \nrequest as multiple requests leading to the possibility of request \nsmuggling when behind a reverse proxy.\n\n\nOlder, EOL versions may also be affected.\n\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.","publishedAt":"2023-11-28T15:31:52.366Z","updatedAt":"2025-10-29T12:00:24.622Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache Tomcat"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Tomcat","defaultStatus":"unaffected","versions":[{"version":"11.0.0-M1","status":"affected","lessThanOrEqual":"11.0.0-M10","versionType":"semver"},{"version":"10.1.0-M1","status":"affected","lessThanOrEqual":"10.1.15","versionType":"semver"},{"version":"9.0.0-M1","status":"affected","lessThanOrEqual":"9.0.82","versionType":"semver"},{"version":"8.5.0","status":"affected","lessThanOrEqual":"8.5.95","versionType":"semver"},{"version":"3","status":"unknown","lessThan":"8.5.0","versionType":"semver"},{"version":"10.0.0-M1","status":"unknown","lessThanOrEqual":"10.0.27","versionType":"semver"}]}],"references":["https://lists.apache.org/thread/0rqq6ktozqc42ro8hhxdmmdjm1k1tpxr","https://www.openwall.com/lists/oss-security/2023/11/28/2","https://security.netapp.com/advisory/ntap-20231214-0009/","https://lists.debian.org/debian-lts-announce/2024/01/msg00001.html"],"weaknesses":["CWE-444"],"ingestedAt":"2026-10-29T20:06:24.729Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/46xxx/CVE-2023-46589.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-46589","state":"PUBLISHED","datePublished":"2023-11-28T15:31:52.366Z","dateUpdated":"2025-10-29T12:00:24.622Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2023-10-23T08:14:01.046Z"},"containers":{"cna":{"title":"Apache Tomcat: HTTP request smuggling via malformed trailer headers","descriptions":[{"lang":"en","value":"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. 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