{"id":"BIT-tomcat-2026-68763","summary":"Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset","details":"Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0 through 11.0.24, from 10.1.0 through 10.1.57, from 9.0.39 through 9.0.120.\n\n\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.","aliases":["CVE-2026-68763"],"modified":"2026-09-11T08:15:04.391718148Z","published":"2026-09-11T05:58:40.260Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:apache:tomcat:*:*:*:*:*:maven:*:*"]},"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2026/08/26/9"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/tv51ty39ppv41v04hdtkp9dp7tg02nzl"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68763"}],"affected":[{"package":{"name":"tomcat","ecosystem":"Bitnami","purl":"pkg:bitnami/tomcat"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.5.59"},{"fixed":"9.0.121"},{"introduced":"10.0.0"},{"fixed":"10.1.58"},{"introduced":"11.0.0"},{"fixed":"11.0.25"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/tomcat/BIT-tomcat-2026-68763.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.9.0"}