{"id":"CVE-2026-119279","published":"2026-10-29T21:17:21.387","lastModified":"2026-10-29T21:17:21.387","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 3.5.10, the ReadableByteBuf.readLength() and ReadableByteBuf.readIntLengthEncodedNotNull() methods narrowed the protocol's unsigned 8-byte length-encoded integer to a Java int without checking that the value fit a non-negative integer. Values above Integer.MAX_VALUE could wrap to a negative or unrelated length that downstream allocation and read paths used. A malicious or compromised server, or a machine-in-the-middle attacker, could trigger NegativeArraySizeException, out-of-bounds failures, or oversized allocation behavior in client connection handling. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.10.","cvssScore":5.9,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-130","CWE-190"],"vendors":[],"products":[],"references":[{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/commit/30d4a883377a9b7762e02ee2c60d54567032ab99","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/commit/bfd9f5ad666a6f7f5401a5b78f2ac2fbd6df8667","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/commit/dbbadc3e215c47bdb913ddf50739ada09a7f23ea","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.10","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-797x-p4mc-jwpm","tags":[]}],"exploitRefs":[{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/commit/30d4a883377a9b7762e02ee2c60d54567032ab99","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/commit/bfd9f5ad666a6f7f5401a5b78f2ac2fbd6df8667","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/commit/dbbadc3e215c47bdb913ddf50739ada09a7f23ea","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.10","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-797x-p4mc-jwpm","tags":[]}],"hasPoc":true,"ai":null}