CVE-2026-101726

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{"bugzilla": {"description": "mysql: mysql: Denial of Service via the C API", "id": "2557186", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2557186"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-400", "details": ["Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: C API). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).", "A flaw was found in the C API component of MySQL. This issue may allow an attacker to impact the confidentiality, integrity, and/or availability of MySQL Server depending on the vulnerability details. Refer to the Oracle CPU advisory for component-specific impact."], "name": "CVE-2026-101726", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "mysql8.4", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "mysql", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "mysql", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "mariadb10.11", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "mariadb11.8", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-10-20T21:22:32Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-101726\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-101726\nhttps://www.oracle.com/security-alerts/cpuoct2026.html"], "statement": "This vulnerability is rated Moderate rather than Important because successful exploitation requires an attacker to possess valid credentials and network connectivity to the database service. While triggering the flaw can disrupt service availability by forcing the MySQL daemon to terminate or become unresponsive, it does not permit unauthorized data disclosure or modification. In standard Red Hat Enterprise Linux deployments, database instances are typically shielded behind internal networks and restricted to authenticated clients, constraining the exposure and blast radius of this issue.", "threat_severity": "Moderate"}

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