CVE-2026-119281
MariaDB Connector/J: Server could switch character_set_results away from UTF-8 without the client noticing
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.mariadb.jdbc:mariadb-java-client | >= 3.0.0, < 3.3.7 | 3.3.7 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mariadb-Corporation | Mariadb-Connector-J | from 3.5.0, before 3.5.11 from 3.0.0, before 3.3.7 from 3.4.0, before 3.4.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-grfq-r75j-rw9x
- https://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-grfq-r75j-rw9x
- https://nvd.nist.gov/vuln/detail/CVE-2026-119281
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/af5e565eb171cfc66ea8e948ddc616abed0c4623
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/d51b968c1b795c73d24e0b3f960205b7bc82d423
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/fdabe74a7df6dce1d6c099f4d0ca1e2acc25919a
- https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7
- https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5
- https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.11