MariaDB Corporation MariaDB Connector/J up to 3.3.6/3.4.4/3.5.10 Decoders out-of-bounds

Summaryinfo

A vulnerability marked as critical has been reported in MariaDB Corporation MariaDB Connector and J up to 3.3.6/3.4.4/3.5.10. The affected element is an unknown function of the component Decoders. Performing a manipulation results in out-of-bounds. This vulnerability is known as CVE-2026-119277. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

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 classified as critical. This affects an unknown code of the component Decoders. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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, decoders for OK packet session-state blocks, column definition packets, text row data, or binary row data used server-declared lengths without confirming that the requested bytes remained in the receive buffer. The decoders could position reads, create sub-buffers, or decode strings beyond the packet boundary. A malicious or compromised server, or a machine-in-the-middle attacker, could trigger unchecked ArrayIndexOutOfBoundsException or IllegalArgumentException failures inside JDBC calls and terminate connection handling. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-119277 since 10/29/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

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

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CPE 2.2info

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