CVE-2026-119280

Low

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, the MariaDbPoolConnection.recover() and MariaDbPoolPinnedConnection.recover() implementations trusted the gtrid_length and bqual_length columns returned by XA RECOVER. The methods allocated and split Xid byte arrays without validating the lengths against Xid.MAXGTRIDSIZE, Xid.MAXBQUALSIZE, or the actual data payload. A malicious or compromised server, or a machine-in-the-middle attacker, could cause large allocations, NegativeArraySizeException, or ArrayIndexOutOfBoundsException during XA recovery. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11.

SeverityLow
CVSS3.7
Exploit probability—
ProductOrg.mariadb.jdbc:mariadb-java-client
PublishedOct 29, 2026
First seenNov 4, 2026

How to fix

Update
  • org.mariadb.jdbc:mariadb-java-client3.3.7, 3.4.5, 3.5.11 or later

Affected products

ProductAffected versionsFixed in
org.mariadb.jdbc:mariadb-java-clientMaven3.0.0 ≤ v < 3.3.7, 3.4.0 ≤ v < 3.4.5, 3.5.0 ≤ v < 3.5.113.3.7, 3.4.5, 3.5.11

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