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, decoders for OK packet session-state blocks, column definition packets, text row data, or binary row data used server-declared lengths without confirming that the requested bytes remained in the receive buffer. The decoders could position reads, create sub-buffers, or decode strings beyond the packet boundary. A malicious or compromised server, or a machine-in-the-middle attacker, could trigger unchecked ArrayIndexOutOfBoundsException or IllegalArgumentException failures inside JDBC calls and terminate connection handling. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| mariadb-corporation | mariadb-connector-j | >= 3.0.0, < 3.3.7, >= 3.4.0, < 3.4.5, >= 3.5.0, < 3.5.11 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mariadb-connector-java | No fix yet | — |
| Debian 13 | mariadb-connector-java | No fix yet | — |
| Debian 12 | mariadb-connector-java | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mariadb-connector-java | No fix yet | — |
| Ubuntu 26.04 LTS | mariadb-connector-java | No fix yet | — |
| Ubuntu 24.04 LTS | mariadb-connector-java | No fix yet | — |
| Ubuntu 22.04 LTS | mariadb-connector-java | No fix yet | — |
| Ubuntu 20.04 LTS | mariadb-connector-java | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | mariadb-connector-java | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | mariadb-java-client | 3.5.11-1.1 | openSUSE-SU-2026:12401-1 |
Advisories 2
- openSUSE-SU-2026:12401-1 mariadb-java-client-3.5.11-1.1 on GA media SUSE / openSUSE Security Updates · Nov 4, 2026
- WID-SEC-2026-4250 MariaDB Java Connector: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 29, 2026
References
- https://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-wfxr-v78w-p49r
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/49c92adfcf816853e324031ba9762a69444cfd12
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/52538206298db39062ad67939f1446b767cacde4
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/ea8c7b6537e50053444188a9a3fd9cae99550f56
- 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