{"id":"CVE-2025-31650","aliases":["BIT-tomcat-2025-31650","GHSA-3p2h-wqq4-wf4h"],"url":"https://o3.security/vulnerability/CVE-2025-31650","summary":"Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame","details":"Improper Input Validation vulnerability in Apache Tomcat. Incorrect error handling for some invalid HTTP priority headers resulted in incomplete clean-up of the failed request which created a memory leak. A large number of such requests could trigger an OutOfMemoryException resulting in a denial of service.\n\nThis issue affects Apache Tomcat: from 9.0.76 through 9.0.102, from 10.1.10 through 10.1.39, from 11.0.0-M2 through 11.0.5.\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: 8.5.90 though 8.5.100.\n\n\nUsers are recommended to upgrade to version 9.0.104, 10.1.40 or 11.0.6 which fix the issue.","published":"2025-04-28T19:14:31.107Z","modified":"2026-08-12T03:51:15.899264517Z","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":0.5992,"percentile":0.99085,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":2,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote","fixedVersion":"9.0.104"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote","fixedVersion":"10.1.40"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote","fixedVersion":"11.0.6"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"9.0.104"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"10.1.40"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"11.0.6"},{"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/1eef1dc459c45f1e421d8bd25ef340fc1cc34edc","label":"apache/tomcat@1eef1dc"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2025/04/28/2"},{"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/2025/31xxx/CVE-2025-31650.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/j6zzk0y3yym9pzfzkq5vcyxzz0yzh826"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-31650"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/1eef1dc459c45f1e421d8bd25ef340fc1cc34edc"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/40ae788c2e64d018b4e58cd4210bb96434d0100d"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/75554da2fc5574862510ae6f0d7b3d78937f1d40"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/8cc3b8fb3f2d8d4d6a757e014f19d1fafa948a60"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/b7674782679e1514a0d154166b1d04d38aaac4a9"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/b98e74f517b36929f4208506e5adad22cb767baa"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/cba1a0fe1289ee7f5dd46c61c38d1e1ac5437bff"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/ded0285b96b4d3f5560dfc8856ad5ec4a9b50ba9"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/f619e6a05029538886d5a9d987925d573b5bb8c2"},{"type":"PACKAGE","url":"https://github.com/apache/tomcat"},{"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":"2026-08-12T03:51:15.899264517Z"}}