MariaDB: Unauthorized file access via CONNECT engine UDFs

Summary

MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the CONNECT engine plugin file-access UDFs json_file(), bson_file(), jfile_make(), bfile_make(), and jbin_file() are affected because each does not enforce FILE privilege or the secure_file_priv setting. A low-privileged attacker can trigger the issue by calling a CONNECT file-access UDF with a filesystem path, then invoke a CONNECT file-access UDF to access a filesystem path and read or write files that the database account is not authorized to access, subject to operating-system permissions. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.

Timeline

1. Oct 16, 2026, 4:21 PM UTCCVE published
2. Oct 16, 2026, 4:49 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Oct 16, 2026, 5:05 PM UTCRecord last updated

Affected versions

• MariaDB server

  From 10.6.1 · fixed in 10.6.28; From 10.11.1 · fixed in 10.11.19; From 11.4.1 · fixed in 11.4.13; From 11.8.1 · fixed in 11.8.9; From 12.3.1 · fixed in 12.3.3; From 13.0.1 · fixed in 13.0.2

• mariadbBitnami

  From 10.6.1 · fixed in 10.6.28; From 10.11.0 · fixed in 10.11.19; From 11.4.0 · fixed in 11.4.13; From 11.8.0 · fixed in 11.8.9; From 12.3.0 · fixed in 12.3.3; From 13.0.0 · fixed in 13.0.2

• mariadb-minBitnami

  From 10.6.1 · fixed in 10.6.28; From 10.11.0 · fixed in 10.11.19; From 11.4.0 · fixed in 11.4.13; From 11.8.0 · fixed in 11.8.9; From 12.3.0 · fixed in 12.3.3; From 13.0.0 · fixed in 13.0.2

• mysql-clientBitnami

  From 10.6.1 · fixed in 10.6.28; From 10.11.0 · fixed in 10.11.19; From 11.4.0 · fixed in 11.4.13; From 11.8.0 · fixed in 11.8.9; From 12.3.0 · fixed in 12.3.3; From 13.0.0 · fixed in 13.0.2

References 9