MariaDB Corporation MariaDB Connector/J up to 3.3.6/3.4.4/3.5.10 OkPacket OkPacket.parse/OkPacket.parseWithInfo allocation of resources

Summaryinfo

A vulnerability was found in MariaDB Corporation MariaDB Connector and J up to 3.3.6/3.4.4/3.5.10. It has been declared as problematic. Affected by this issue is the function OkPacket.parse/OkPacket.parseWithInfo of the component OkPacket. Executing a manipulation can lead to allocation of resources. This vulnerability is registered as CVE-2026-119276. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in MariaDB Corporation MariaDB Connector and J up to 3.3.6/3.4.4/3.5.10. This vulnerability affects the function OkPacket.parse/OkPacket.parseWithInfo of the component OkPacket. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability was named CVE-2026-119276 since 10/29/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 3.3.7, 3.4.5 or 3.5.11 eliminates this vulnerability.

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Productinfo

Type

• Database Software

Vendor

• MariaDB Corporation

Name

• J
• MariaDB Connector

Version

• 3.3.0
• 3.3.1
• 3.3.2
• 3.3.3
• 3.3.4
• 3.3.5
• 3.3.6
• 3.4.0
• 3.4.1
• 3.4.2
• 3.4.3
• 3.4.4
• 3.5.0
• 3.5.1
• 3.5.2
• 3.5.3
• 3.5.4
• 3.5.5
• 3.5.6
• 3.5.7
• 3.5.8
• 3.5.9
• 3.5.10

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

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