CVE-2026-119281 MariaDB Connector/J: Server could switch character_set_results away from UTF-8 without the client noticing
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-119281?
CVE-2026-119281 is a medium-severity vulnerability in mariadb-corporation mariadb-connector-j, published on 29 Oct 2026.
Official 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 connector assumed result bytes were UTF-8 but guarded only changes to character_set_client. It did not reject non-UTF-8 character_set_results changes and relied on the server's global session_track_system_variables configuration to report character-set changes. A malicious or compromised server, or a machine-in-the-middle attacker, could suppress tracking or change the result charset so application strings differed from the returned bytes, potentially defeating application-side validation or escaping that depended on the decoded values. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11.
Weakness: CWE-838
Which versions are affected by CVE-2026-119281?
How do I fix CVE-2026-119281?
No fix has been published for CVE-2026-119281 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-119281 being exploited?
There is no known exploitation of CVE-2026-119281 in the wild and no public exploit code.