CVE-2026-77791

{"id": "CVE-2026-77791", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-77791", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-23T12:44:33.453302Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"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"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"vendor": "Apache Software Foundation", "product": "Apache Tomcat", "versions": [{"status": "affected", "version": "11.0.0-M5", "versionType": "semver", "lessThanOrEqual": "11.0.25"}, {"status": "affected", "version": "10.1.8", "versionType": "semver", "lessThanOrEqual": "10.1.59"}, {"status": "affected", "version": "9.0.74", "versionType": "semver", "lessThanOrEqual": "9.0.121"}, {"status": "affected", "version": "8.5.88", "versionType": "semver", "lessThanOrEqual": "8.5.100"}, {"status": "unaffected", "version": "0", "versionType": "semver", "lessThanOrEqual": "7.0.109"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-23T12:17:06.927", "references": [{"url": "https://lists.apache.org/thread/mb1pjjooqytrl6hbvbt3rw1lqwlon4cz", "source": "security@apache.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/09/23/24", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security@apache.org", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "Uncontrolled Resource Consumption vulnerability in Apache Tomcat during sending of WebSocket close message enabled a DoS attack.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M5 through 11.0.25, from 10.1.8 through 10.1.59, from 9.0.74 through 9.0.121.\n\n\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.88 through 8.5.100. Other unsupported versions may also be affected.\n\n\n\n\nUsers are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue."}], "lastModified": "2026-09-23T19:19:19.043", "sourceIdentifier": "security@apache.org"}