{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-65927", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-07-23T14:24:12.608Z", "datePublished": "2026-08-25T21:53:05.852Z", "dateUpdated": "2026-08-26T02:30:38.001Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-08-25T21:53:05.852Z"}, "title": "Apache Tomcat: RewriteValve [N] restarts at the second rule and may bypass access control", "problemTypes": [{"descriptions": [{"description": "CWE-193 Off-by-one Error", "lang": "en", "cweId": "CWE-193", "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": "9.0.0.M1", "lessThanOrEqual": "9.0.120", "versionType": "semver"}, {"status": "affected", "version": "8.5.0", "lessThanOrEqual": "8.5.100", "versionType": "semver"}, {"status": "unaffected", "version": "7.0.0", "lessThanOrEqual": "7.0.109", "versionType": "semver"}, {"status": "unaffected", "version": "0", "lessThan": "7.0.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"value": "Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite valves causes rewrite processing to restart at the second rule rather than the first rule.\n\n\n\n\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 9.0.0.M1 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 8.5.0 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>Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite valves causes rewrite processing to restart at the second rule rather than the first rule.</p><p></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 9.0.0.M1 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 8.5.0 through 8.5.100. 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><p></p>"}]}], "references": [{"url": "https://lists.apache.org/thread/st1dx1zyn5y7ny2s0sscmh6lrv3worr4", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "important"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "credits": [{"lang": "en", "value": "4ra1n, pyn3rd and unam4", "type": "finder"}], "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/08/26/5"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-08-26T02:30:38.001Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Apache Tomcat", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "11.0.24", "status": "affected", "version": "11.0.0-M1", "versionType": "semver"}, {"lessThanOrEqual": "10.1.57", "status": "affected", "version": "10.1.0-M1", "versionType": "semver"}, {"lessThanOrEqual": "9.0.120", "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": "unaffected", "version": "7.0.0", "versionType": "semver"}, {"lessThan": "7.0.0", "status": "unaffected", "version": "0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite valves causes rewrite processing to restart at the second rule rather than the first rule.\n\n\n\n\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 9.0.0.M1 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 8.5.0 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."}], "id": "CVE-2026-65927", "lastModified": "2026-08-25T22:17:05.433", "metrics": {}, "published": "2026-08-25T22:17:05.433", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread/st1dx1zyn5y7ny2s0sscmh6lrv3worr4"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-193"}], "source": "security@apache.org", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[11.0.0-M1,11.0.24]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[10.1.0-M1,10.1.57]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.0.0.M1,9.0.120]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.5.0,8.5.100]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.0,7.0.109]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,7.0.0)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Apache Tomcat", "source": "cna", "vendor": "Apache Software Foundation"}, "product": "tomcat", "vendor": "apache"}], "created": "2026-08-26T01:45:03.413360+00:00", "updated": "2026-08-26T03:00:09.506334+00:00", "vendors": ["apache", "apache$PRODUCT$tomcat"]}