{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-119276", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-29T18:50:28.064Z", "datePublished": "2026-10-29T20:47:32.086Z", "dateUpdated": "2026-10-29T20:47:32.086Z"}, "containers": {"cna": {"title": "MariaDB Connector/J: Rogue server can drive large heap allocations from server-declared lengths in OK packets", "problemTypes": [{"descriptions": [{"cweId": "CWE-130", "lang": "en", "description": "CWE-130: Improper Handling of Length Parameter Inconsistency", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-789", "lang": "en", "description": "CWE-789: Memory Allocation with Excessive Size Value", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-h599-m3w5-9m7x", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-h599-m3w5-9m7x"}, {"name": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/b9e1ee8d9b4d820d70719504cdfd5c97f1aede5f", "tags": ["x_refsource_MISC"], "url": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/b9e1ee8d9b4d820d70719504cdfd5c97f1aede5f"}, {"name": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/beb445fcf9294113878fc05ac77f0efdf0596ac6", "tags": ["x_refsource_MISC"], "url": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/beb445fcf9294113878fc05ac77f0efdf0596ac6"}, {"name": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/ea8c7b6537e50053444188a9a3fd9cae99550f56", "tags": ["x_refsource_MISC"], "url": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/ea8c7b6537e50053444188a9a3fd9cae99550f56"}, {"name": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7", "tags": ["x_refsource_MISC"], "url": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7"}, {"name": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5", "tags": ["x_refsource_MISC"], "url": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5"}, {"name": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.11", "tags": ["x_refsource_MISC"], "url": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.11"}], "affected": [{"vendor": "mariadb-corporation", "product": "mariadb-connector-j", "versions": [{"version": ">= 3.0.0, < 3.3.7", "status": "affected"}, {"version": ">= 3.4.0, < 3.4.5", "status": "affected"}, {"version": ">= 3.5.0, < 3.5.11", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-29T20:47:32.086Z"}, "descriptions": [{"lang": "en", "value": "MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. From 3.0.0 until 3.3.7, 3.4.5, and 3.5.11, when CLIENT_SESSION_TRACK was negotiated, the OkPacket.parse() and OkPacket.parseWithInfo() paths allocated byte arrays using server-declared lengths for the OK packet info field and session-state variable names and values before confirming that the bytes remained in the packet. A malicious or compromised server, or a machine-in-the-middle attacker, could send a small OK packet declaring a much larger length and repeatedly force attacker-controlled heap allocations before the subsequent copy failed. This could create garbage-collection pressure or an OutOfMemoryError in the client application. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11."}], "source": {"advisory": "GHSA-h599-m3w5-9m7x", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "mariadb-connector-j", "vendor": "mariadb-corporation", "versions": [{"status": "affected", "version": ">= 3.0.0, < 3.3.7"}, {"status": "affected", "version": ">= 3.4.0, < 3.4.5"}, {"status": "affected", "version": ">= 3.5.0, < 3.5.11"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. From 3.0.0 until 3.3.7, 3.4.5, and 3.5.11, when CLIENT_SESSION_TRACK was negotiated, the OkPacket.parse() and OkPacket.parseWithInfo() paths allocated byte arrays using server-declared lengths for the OK packet info field and session-state variable names and values before confirming that the bytes remained in the packet. A malicious or compromised server, or a machine-in-the-middle attacker, could send a small OK packet declaring a much larger length and repeatedly force attacker-controlled heap allocations before the subsequent copy failed. This could create garbage-collection pressure or an OutOfMemoryError in the client application. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11."}], "id": "CVE-2026-119276", "lastModified": "2026-10-29T21:17:20.907", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-29T21:17:20.907", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/b9e1ee8d9b4d820d70719504cdfd5c97f1aede5f"}, {"source": "security-advisories@github.com", "url": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/beb445fcf9294113878fc05ac77f0efdf0596ac6"}, {"source": "security-advisories@github.com", "url": "https://github.com/mariadb-corporation/mariadb-connector-j/commit/ea8c7b6537e50053444188a9a3fd9cae99550f56"}, {"source": "security-advisories@github.com", "url": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7"}, {"source": "security-advisories@github.com", "url": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.11"}, {"source": "security-advisories@github.com", "url": "https://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-h599-m3w5-9m7x"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-130"}, {"lang": "en", "value": "CWE-789"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

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