{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68763","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2026-07-31T15:42:11.281Z","datePublished":"2026-08-25T22:00:37.047Z","dateUpdated":"2026-08-26T18:36:43.341Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2026-08-25T22:00:37.047Z"},"title":"Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset","problemTypes":[{"descriptions":[{"description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","cweId":"CWE-400","type":"CWE"}]}],"source":{"discovery":"EXTERNAL"},"affected":[{"vendor":"Apache Software Foundation","product":"Apache Tomcat","versions":[{"status":"affected","version":"11.0.0-M1","lessThanOrEqual":"11.0.24","versionType":"semver"},{"status":"affected","version":"10.1.0-M1","lessThanOrEqual":"10.1.57","versionType":"semver"},{"status":"affected","version":"9.0.39","lessThanOrEqual":"9.0.120","versionType":"semver"},{"status":"affected","version":"8.5.59","lessThanOrEqual":"8.5.100","versionType":"semver"},{"status":"unaffected","version":"0","lessThanOrEqual":"7.0.109","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"value":"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-M1 through 11.0.24, from 10.1.0-M1 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.","lang":"en","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Uncontrolled Resource Consumption vulnerability in Apache Tomcat&nbsp;via an allocation leak in the HTTP/2 backlog tracking when a stream is reset</p><p>This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120.</p><p>The 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.&nbsp;Other unsupported versions may also be affected.</p><p>Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.</p>"}]}],"references":[{"url":"https://lists.apache.org/thread/tv51ty39ppv41v04hdtkp9dp7tg02nzl","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"Textual description of severity","content":{"text":"important"}},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"credits":[{"lang":"en","value":"Zhen Kong","type":"finder"}],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/08/26/9"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-08-26T02:30:41.764Z"}},{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-26T18:36:23.912058Z","id":"CVE-2026-68763","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-26T18:36:43.341Z"}}]}}