{"containers":{"adp":[{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}},{"other":{"content":{"id":"CVE-2026-87022","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-09-23T14:27:17.688403Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-09-23T14:27:37.246Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"},{"providerMetadata":{"dateUpdated":"2026-09-23T18:10:52.633Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"url":"http://www.openwall.com/lists/oss-security/2026/09/23/30"}],"title":"CVE Program Container"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Apache Tomcat","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"11.0.25","status":"affected","version":"11.0.0-M1","versionType":"semver"},{"lessThanOrEqual":"10.1.59","status":"affected","version":"10.1.0-M1","versionType":"semver"},{"lessThanOrEqual":"9.0.121","status":"affected","version":"9.0.0.M1","versionType":"semver"},{"lessThanOrEqual":"8.5.100","status":"affected","version":"8.5.0","versionType":"semver"},{"lessThanOrEqual":"7.0.109","status":"affected","version":"7.0.56","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"krsecurity(kongr)"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Improper handling of length parameter inconsistency vulnerability in Apache Tomcat allows WebSocket message smuggling when per-message-deflate is used.</p><p>This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.</p><p><span>The following versions were EOS at the time the CVE was created but are known to be affected:</span><span>&nbsp;</span>from 8.5.0 through 8.5.100, from 7.0.56 through 7.0.109.&nbsp;<span>Other unsupported versions may also be affected.</span></p><p>Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.1.22, which fix the issue.</p>"}],"value":"Improper handling of length parameter inconsistency vulnerability in Apache Tomcat allows WebSocket message smuggling when per-message-deflate is used.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.\n\n\n\nThe following versions were EOS at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.56 through 7.0.109. Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.26, 10.1.60 or 9.1.22, which fix the issue."}],"metrics":[{"other":{"content":{"text":"low"},"type":"Textual description of severity"},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-130","description":"CWE-130 Improper handling of length parameter inconsistency","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-23T11:32:55.485Z","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache"},"references":[{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/ypvlkjqsq0480fnk9jm6h9qllddwlw4w"}],"source":{"discovery":"EXTERNAL"},"title":"Apache Tomcat: WebSocket message smuggling with per-message-deflate","x_generator":{"engine":"Vulnogram 1.0.3"}}},"cveMetadata":{"assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","assignerShortName":"apache","cveId":"CVE-2026-87022","datePublished":"2026-09-23T11:32:55.485Z","dateReserved":"2026-09-08T17:16:33.368Z","dateUpdated":"2026-09-23T18:10:52.633Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"}