CVE-2026-79677

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{"affected_release": [{"advisory": "RHSA-2026:68257", "cpe": "cpe:/a:redhat:hummingbird:1", "package": "tomcat10-main-10.1.60-0.1.hum1", "product_name": "Red Hat Hardened Images", "release_date": "2026-09-16T00:00:00Z"}, {"advisory": "RHSA-2026:68258", "cpe": "cpe:/a:redhat:hummingbird:1", "package": "tomcat11-main-11.0.26-0.1.hum1", "product_name": "Red Hat Hardened Images", "release_date": "2026-09-16T00:00:00Z"}], "bugzilla": {"description": "tomcat: Apache Tomcat: Denial of Service due to lost asynchronous WebSocket write timeouts", "id": "2539616", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2539616"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-772", "details": ["Missing release of resource after effective lifetime, Comparison using wrong factors vulnerability in Apache Tomcat allows a denial of service as a result of lost time outs for asynchronous WebSocket writes.\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.\nThe following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through 7.0.109.\u00a0Other unsupported versions may also be affected.\nUsers are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.", "A flaw was found in Apache Tomcat. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by exploiting lost timeouts for asynchronous WebSocket writes. This can lead to the affected system becoming unresponsive or unavailable."], "name": "CVE-2026-79677", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Under investigation", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Under investigation", "package_name": "tomcat9", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "tomcat6", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Under investigation", "package_name": "pki-deps:10.6/pki-servlet-engine", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Under investigation", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Under investigation", "package_name": "pki-servlet-engine", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Under investigation", "package_name": "tomcat", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "hi/tomcat", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:5", "fix_state": "Under investigation", "package_name": "jws5-tomcat", "product_name": "Red Hat JBoss Web Server 5"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:6", "fix_state": "Under investigation", "package_name": "jws6-tomcat", "product_name": "Red Hat JBoss Web Server 6"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:7", "fix_state": "Under investigation", "package_name": "jws7-tomcat", "product_name": "Red Hat JBoss Web Server 7"}], "public_date": "2026-09-23T11:28:03Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-79677\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-79677\nhttp://www.openwall.com/lists/oss-security/2026/09/23/27\nhttps://lists.apache.org/thread/bzwps6ck4szf2hmksbbon3syyl9qnkv8"], "threat_severity": "Moderate"}

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