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CVE-2026-119277

MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases

Risk score
41/100
CVSS
5.9 v3.1
Exploit chance (30 days)
0.4%
Published
29 Oct 2026

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What to know

What it 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 b…
Affected
See advisory
Fix
Upgrade the product to 3.3.7, 3.4.5 or 3.5.11 (whichever matches your release line), or later.
Exploitation
No known exploitation

Why it is Yellow

  • CVSS 5.9 medium

References

Original description

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.

Last activity 29 Oct 2026. Patch Forecast updates every hour.