{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-101356", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-09-28T15:30:32.593Z", "datePublished": "2026-10-20T13:46:50.842Z", "dateUpdated": "2026-10-20T13:46:50.842Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-10-20T13:46:50.842Z"}, "title": "Apache Tomcat: HTTP/2 request/response mix-up after error during async processing", "problemTypes": [{"descriptions": [{"description": "Incorrect object recycling and re-use", "lang": "en"}]}], "source": {"discovery": "EXTERNAL"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Tomcat", "versions": [{"status": "affected", "version": "11.0.22", "lessThanOrEqual": "11.0.26", "versionType": "semver"}, {"status": "affected", "version": "10.1.55", "lessThanOrEqual": "10.1.60", "versionType": "semver"}, {"status": "affected", "version": "9.0.118", "lessThanOrEqual": "9.0.122", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"value": "Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 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 fixes the issue.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users.</p><p>This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 through 9.0.122.</p><p>Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fixes the issue.</p>"}]}], "references": [{"url": "https://lists.apache.org/thread.html/d1xjt7bbjqw7y7n5mcb4fm815hpfgc27", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "important"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "x_generator": {"engine": "Vulnogram 1.0.3"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Apache Tomcat", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "11.0.26", "status": "affected", "version": "11.0.22", "versionType": "semver"}, {"lessThanOrEqual": "10.1.60", "status": "affected", "version": "10.1.55", "versionType": "semver"}, {"lessThanOrEqual": "9.0.122", "status": "affected", "version": "9.0.118", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 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 fixes the issue."}], "id": "CVE-2026-101356", "lastModified": "2026-10-20T14:16:55.767", "metrics": {}, "published": "2026-10-20T14:16:55.767", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread.html/d1xjt7bbjqw7y7n5mcb4fm815hpfgc27"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received"}

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