CVE-2026-55858: org.mariadb.jdbc:mariadb-java-client has Inappropriate Encoding for Output Context
The connector encodes and decodes all character data assuming the connection character set is UTF-8. A server can change character_set_client mid-session to a non-UTF-8 charset, after which the driver and server interpret the same bytes under different encodings, causing silent data corruption and a client/server charset-confusion mismatch.
References
- github.com/advisories/GHSA-xvr9-35cr-46v9
- github.com/mariadb-corporation/mariadb-connector-j/commit/300716bef1e1d0370a41be7863b88aa2d55fbb69
- github.com/mariadb-corporation/mariadb-connector-j/commit/7b3c69221b5463ee03472654040b3f6b9e5329c7
- github.com/mariadb-corporation/mariadb-connector-j/commit/8cfd9df697372ad4ed09fe87a34b34babb6d43d6
- github.com/mariadb-corporation/mariadb-connector-j/commit/c555c9b477521be0c35c3a5461f9f46681553607
- github.com/mariadb-corporation/mariadb-connector-j/releases/tag/2.7.14
- github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.5
- github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.3
- github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.9
- github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-xvr9-35cr-46v9
- jira.mariadb.org/browse/CONJ-1317
- nvd.nist.gov/vuln/detail/CVE-2026-55858
Code Behaviors & Features
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