CVE-2026-119276

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{"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": "2026-10-30T17:18:03.880", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-119276", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-30T17:11:37.642004Z", "version": "2.0.3"}}]}, "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": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-130"}, {"lang": "en", "value": "CWE-789"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "org.mariadb.jdbc/mariadb-java-client: mariadb-java-client: Denial of Service via uncontrolled memory allocation", "id": "2563696", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2563696"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-130", "details": ["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.", "A flaw was found in MariaDB Connector/J. When processing database response packets, the driver allocates memory based on server-declared lengths before verifying that sufficient data remains in the packet. A malicious database server or an attacker positioned in the middle of network communication can send crafted response packets with manipulated length values to trigger uncontrolled memory allocations. This flaw can exhaust available system memory, leading to an OutOfMemoryError and a Denial of Service (DoS) for the client application."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-119276", "package_state": [{"cpe": "cpe:/a:redhat:debezium:3", "fix_state": "Fix deferred", "package_name": "mariadb-java-client", "product_name": "Red Hat build of Debezium 3"}, {"cpe": "cpe:/a:redhat:build_keycloak:", "fix_state": "Fix deferred", "package_name": "mariadb-java-client", "product_name": "Red Hat Build of Keycloak"}, {"cpe": "cpe:/a:redhat:build_keycloak:", "fix_state": "Fix deferred", "package_name": "rhbk/keycloak-rhel9", "product_name": "Red Hat Build of Keycloak"}, {"cpe": "cpe:/a:redhat:quarkus:3", "fix_state": "Fix deferred", "package_name": "mariadb-java-client", "product_name": "Red Hat build of Quarkus"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "mariadb-java-client", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "mariadb:10.3/mariadb", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "mariadb-devel:10.3/mariadb", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "mariadb-java-client", "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:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-trustyai-service-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Out of support scope", "package_name": "mariadb", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "candlepin", "product_name": "Red Hat Satellite 6"}], "public_date": "2026-10-29T20:47:32Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-119276\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-119276\nhttps://github.com/mariadb-corporation/mariadb-connector-j/commit/b9e1ee8d9b4d820d70719504cdfd5c97f1aede5f\nhttps://github.com/mariadb-corporation/mariadb-connector-j/commit/beb445fcf9294113878fc05ac77f0efdf0596ac6\nhttps://github.com/mariadb-corporation/mariadb-connector-j/commit/ea8c7b6537e50053444188a9a3fd9cae99550f56\nhttps://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7\nhttps://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5\nhttps://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.11\nhttps://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-h599-m3w5-9m7x"], "statement": "This vulnerability is rated as Moderate severity because exploitation requires either a compromised database server or an attacker positioned to perform machine-in-the-middle manipulation of network traffic. A rogue endpoint can trigger excessive memory allocations during response parsing, leading to client-side resource exhaustion or application termination via OutOfMemory errors. Because client connections in supported Red Hat deployments typically communicate with authenticated internal database instances, the exposure is limited, and the flaw cannot be leveraged for data confidentiality or integrity breaches.", "threat_severity": "Moderate"}

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