{"schemaVersion":3,"id":"CVE-2026-101620","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Optimizer).  Supported versions that are affected are MySQL Server: 9.7.0-9.7.3; MySQL Cluster: 9.7.0-9.7.3. 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).","dates":{"published":"2026-10-20T21:21:56.075Z","modified":"2026-10-21T18:37:33.559Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00259,"percentile":0.16628,"severity":"low","asOf":"2026-10-22T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-21T00:00:00.000Z","score":0.00289,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00259,"percentile":0.16628}],"last30":[{"date":"2026-10-21T00:00:00.000Z","score":0.00289,"percentile":null},{"date":"2026-10-22T00:00:00.000Z","score":0.00259,"percentile":0.16628}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-284","name":"Improper Access Control","description":"The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.","type":"weakness","status":"Incomplete","abstraction":"Pillar","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/284.html"}],"affected":[{"vendor":"oracle corporation","product":"mysql cluster","name":"MySQL Cluster","label":"mysql cluster","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"9.7.0-9.7.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"9.7.0-9.7.3","eol":null,"hubHref":"/vendor/oracle_corporation/mysql_cluster"},{"vendor":"oracle corporation","product":"mysql server","name":"MySQL Server","label":"mysql server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"9.7.0-9.7.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"9.7.0-9.7.3","eol":null,"hubHref":"/vendor/oracle_corporation/mysql_server"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.oracle.com/security-alerts/cpuoct2026.html","label":"www.oracle.com/security-alerts/cpuoct2026.html","hostname":"www.oracle.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-20T21:21:56.075Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-21T18:37:33.559Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T18:28:20.569Z","stale":false,"partial":false}}