{"id":"CVE-2023-42795","aliases":["BIT-tomcat-2023-42795","GHSA-g8pj-r55q-5c2v"],"url":"https://o3.security/vulnerability/CVE-2023-42795","summary":"Apache Tomcat: Failure during request clean-up leads to sensitive data leaking to subsequent requests","details":"Incomplete Cleanup vulnerability in Apache Tomcat.\n\nWhen recycling various internal objects in Apache Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.80 and from 8.5.0 through 8.5.93, an error could cause Tomcat to skip some parts of the recycling process leading to information leaking from the current request/response to the next.  Older, EOL versions may also be affected.\n\nUsers are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.","published":"2023-10-10T17:42:16.705Z","modified":"2026-08-12T03:51:23.936199458Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"epss":{"score":0.0216,"percentile":0.80469,"asOf":"2026-08-09"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","fixedVersion":"11.0.0-M12"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","fixedVersion":"10.1.14"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","fixedVersion":"9.0.81"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat","fixedVersion":"8.5.94"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"10.1.14"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"9.0.81"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"8.5.94"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"11.0.0-M12"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"11.0.0-M12"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"10.1.14"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"9.0.81"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"8.5.94"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-util","fixedVersion":"11.0.0-M12"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-util","fixedVersion":"10.1.14"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-util","fixedVersion":"9.0.81"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-util","fixedVersion":"8.5.94"}],"fix":{"url":"https://github.com/apache/tomcat/commit/30f8063d7a9b4c43ae4722f5e382a76af1d7a6bf","label":"apache/tomcat@30f8063"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2023/10/10/9"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/42xxx/CVE-2023-42795.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/065jfyo583490r9j2v73nhpyxdob56lw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-42795"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20231103-0007/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5521"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5522"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/30f8063d7a9b4c43ae4722f5e382a76af1d7a6bf"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/44d05d75d696ca10ce251e4e370511e38f20ae75"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/9375d67106f8df9eb9d7b360b2bef052fe67d3d4"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/d6db22e411307c97ddf78315c15d5889356eca38"},{"type":"PACKAGE","url":"https://github.com/apache/tomcat"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20231103-0007"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:23.936199458Z"}}