{"id":"CVE-2024-34750","aliases":["BIT-tomcat-2024-34750","GHSA-wm9w-rjj3-j356"],"url":"https://o3.security/vulnerability/CVE-2024-34750","summary":"Apache Tomcat: HTTP/2 excess header handling DoS","details":"Improper Handling of Exceptional Conditions, Uncontrolled Resource Consumption vulnerability in Apache Tomcat. When processing an HTTP/2 stream, Tomcat did not handle some cases of excessive HTTP headers correctly. This led to a miscounting of active HTTP/2 streams which in turn led to the use of an incorrect infinite timeout which allowed connections to remain open which should have been closed.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M20, from 10.1.0-M1 through 10.1.24, from 9.0.0-M1 through 9.0.89.\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: 8.5.0 though 8.5.100. Other EOL versions may also be affected.\n\n\nUsers are recommended to upgrade to version 11.0.0-M21, 10.1.25 or 9.0.90, which fixes the issue.","published":"2024-07-03T19:32:34.695Z","modified":"2026-08-12T03:51:23.581500186Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.04602,"percentile":0.90781,"asOf":"2026-08-09"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"11.0.0-M21"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"10.1.25"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"9.0.90"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote","fixedVersion":"11.0.0-M21"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote","fixedVersion":"10.1.25"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote","fixedVersion":"9.0.90"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote","fixedVersion":null},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":null}],"fix":{"url":"https://github.com/apache/tomcat/commit/2344a4c0d03e307ba6b8ab6dc8b894cc8bac63f2","label":"apache/tomcat@2344a4c"},"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/34xxx/CVE-2024-34750.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/4kqf0bc9gxymjc2x7v3p7dvplnl77y8l"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-34750"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20240816-0004/"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/2344a4c0d03e307ba6b8ab6dc8b894cc8bac63f2"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/2afae300c9ac9c0e516e2e9de580847d925365c3"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/9fec9a82887853402833a80b584e3762c7423f5f"},{"type":"PACKAGE","url":"https://github.com/apache/tomcat"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20240816-0004"},{"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":"2026-08-12T03:51:23.581500186Z"}}