{"cvss":8.8,"datePublished":"2026-10-20T22:18:33.710","dateUpdated":"2026-10-30T14:19:11.003","description":"Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Group Replication GCS).  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 unauthenticated attacker with access to the physical communication segment attached to the hardware where the MySQL Server, MySQL Cluster executes to compromise MySQL Server, MySQL Cluster.  Successful attacks of this vulnerability can result in takeover of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).","id":"CVE-2026-101781","raw":{"affected":[{"affectedData":[{"product":"MySQL Server","vendor":"Oracle Corporation","versions":[{"status":"affected","version":"8.4.0-8.4.12"},{"status":"affected","version":"9.7.0-9.7.3"},{"status":"affected","version":"26.7.0-26.7.1"}]},{"product":"MySQL Cluster","vendor":"Oracle Corporation","versions":[{"status":"affected","version":"8.0.0-8.0.49"},{"status":"affected","version":"8.4.0-8.4.12"},{"status":"affected","version":"9.7.0-9.7.3"},{"status":"affected","version":"26.7.0-26.7.1"}]}],"source":"secalert_us@oracle.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*","matchCriteriaId":"87832998-710A-4514-A1CA-15632E2074C3","versionEndIncluding":"8.0.49","versionStartIncluding":"8.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*","matchCriteriaId":"9FBC2892-0E57-4B53-88C7-1A7C50D57371","versionEndIncluding":"8.4.12","versionStartIncluding":"8.4.0","vulnerable":true},{"criteria":"cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*","matchCriteriaId":"9807F197-A91C-482E-A94C-094ABF80032D","versionEndIncluding":"9.7.3","versionStartIncluding":"9.7.0","vulnerable":true},{"criteria":"cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*","matchCriteriaId":"478D2197-7EDF-4939-BD48-1FCE01A1115F","versionEndIncluding":"26.7.1","versionStartIncluding":"26.7.0","vulnerable":true},{"criteria":"cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*","matchCriteriaId":"64685A97-6D60-4B5F-9CDF-9748BE388C7B","versionEndIncluding":"8.4.12","versionStartIncluding":"8.4.0","vulnerable":true},{"criteria":"cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*","matchCriteriaId":"C5C2E977-6296-41D4-917A-3D717D8802EB","versionEndIncluding":"9.7.3","versionStartIncluding":"9.7.0","vulnerable":true},{"criteria":"cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*","matchCriteriaId":"7A2D131B-48DC-4163-A3C5-A3696C5809B2","versionEndIncluding":"26.7.1","versionStartIncluding":"26.7.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Group Replication GCS).  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 unauthenticated attacker with access to the physical communication segment attached to the hardware where the MySQL Server, MySQL Cluster executes to compromise MySQL Server, MySQL Cluster.  Successful attacks of this vulnerability can result in takeover of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)."}],"id":"CVE-2026-101781","lastModified":"2026-10-30T14:19:11.003","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":2.8,"impactScore":5.9,"source":"secalert_us@oracle.com","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-101781","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","timestamp":"2026-10-22T15:12:25.121261Z","version":"2.0.3"}}]},"published":"2026-10-20T22:18:33.710","references":[{"source":"secalert_us@oracle.com","tags":["Vendor Advisory"],"url":"https://www.oracle.com/security-alerts/cpuoct2026.html"}],"sourceIdentifier":"secalert_us@oracle.com","vulnStatus":"Analyzed","weaknesses":[{"description":[{"lang":"en","value":"CWE-284"}],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary"}]},"severity":"HIGH","source":"nvd","title":"Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Group Replication GCS)"}