{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-34270","assignerOrgId":"43595867-4340-4103-b7a2-9a5208d29a85","state":"PUBLISHED","assignerShortName":"oracle","dateReserved":"2026-03-26T19:48:45.674Z","datePublished":"2026-04-21T20:35:15.179Z","dateUpdated":"2026-04-22T13:54:29.141Z"},"containers":{"cna":{"providerMetadata":{"orgId":"43595867-4340-4103-b7a2-9a5208d29a85","shortName":"oracle","dateUpdated":"2026-04-21T20:35:15.179Z"},"problemTypes":[{"descriptions":[{"lang":"en-US","description":"Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server."}]}],"affected":[{"vendor":"Oracle Corporation","product":"MySQL Server","versions":[{"version":"8.0.0","status":"affected","lessThanOrEqual":"8.0.45","versionType":"custom"},{"version":"8.4.0","status":"affected","lessThanOrEqual":"8.4.8","versionType":"custom"},{"version":"9.0.0","status":"affected","lessThanOrEqual":"9.6.0","versionType":"custom"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*","versionStartIncluding":"8.0.0","versionEndIncluding":"8.0.45"},{"vulnerable":true,"criteria":"cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*","versionStartIncluding":"8.4.0","versionEndIncluding":"8.4.8"},{"vulnerable":true,"criteria":"cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*","versionStartIncluding":"9.0.0","versionEndIncluding":"9.6.0"}]}]}],"descriptions":[{"lang":"en-US","value":"Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Group Replication Plugin).  Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 and  9.0.0-9.6.0. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. 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)."}],"references":[{"url":"https://www.oracle.com/security-alerts/cpuapr2026.html","name":"Oracle Advisory","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM"}}]},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-400","lang":"en","description":"CWE-400 Uncontrolled Resource Consumption"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-22T13:54:25.810833Z","id":"CVE-2026-34270","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-22T13:54:29.141Z"}}]}}