{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-88041", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-09-09T20:29:03.987Z", "datePublished": "2026-10-20T13:43:28.681Z", "dateUpdated": "2026-10-20T18:10:05.285Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-10-20T13:43:28.681Z" }, "title": "Apache Tomcat: HTTP/2 trailer header cross-contamination", "problemTypes": [ { "descriptions": [ { "description": "CWE-459 Incomplete cleanup", "lang": "en", "cweId": "CWE-459", "type": "CWE" } ] } ], "source": { "discovery": "EXTERNAL" }, "affected": [ { "vendor": "Apache Software Foundation", "product": "Apache Tomcat", "versions": [ { "status": "affected", "version": "11.0.0-M23", "lessThanOrEqual": "11.0.26", "versionType": "semver" }, { "status": "affected", "version": "10.1.27", "lessThanOrEqual": "10.1.60", "versionType": "semver" }, { "status": "affected", "version": "9.0.92", "lessThanOrEqual": "9.0.122", "versionType": "semver" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "value": "Incomplete cleanup vulnerability in Apache Tomcat allowed an trailer information from a previous request to leak into a subsequent request.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M23 through 11.0.26, from 10.1.27 through 10.1.60, from 9.0.92 through 9.0.122.\n\n\n\nUsers are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.", "lang": "en", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "

Incomplete cleanup vulnerability in Apache Tomcat allowed an trailer information from a previous request to leak into a subsequent request.

This issue affects Apache Tomcat: from 11.0.0-M23 through 11.0.26, from 10.1.27 through 10.1.60, from 9.0.92 through 9.0.122.

Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

" } ] } ], "references": [ { "url": "https://lists.apache.org/thread.html/dnmm9l3byytg3l66nk1jrqfrl7jty7n1", "tags": [ "vendor-advisory" ] } ], "metrics": [ { "other": { "type": "Textual description of severity", "content": { "text": "low" } }, "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "credits": [ { "lang": "en", "value": "Wentao He", "type": "finder" } ], "x_generator": { "engine": "Vulnogram 1.0.3" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "http://www.openwall.com/lists/oss-security/2026/10/20/24" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-10-20T18:10:05.285Z" } } ] } }