Vulnerability · Published Oct 29, 2026 · Assigned by GitHub_M
CVE-2026-119277MariaDB Connector/J: Rogue server can make the client read past the packet through server-declared lengths
Medium 5.9
In plain English
A medium-severity out-of-bounds read in mariadb-connector-j from mariadb-corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
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, 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mariadb-connector-java | no fix listed | DEBIAN-CVE-2026-119277 |
| Debian:13 | mariadb-connector-java | no fix listed | DEBIAN-CVE-2026-119277 |
| Debian:14 | mariadb-connector-java | no fix listed | DEBIAN-CVE-2026-119277 |
| Ubuntu:22.04:LTS | mariadb-connector-java | no fix listed | UBUNTU-CVE-2026-119277 |
| Ubuntu:24.04:LTS | mariadb-connector-java | no fix listed | UBUNTU-CVE-2026-119277 |
| Ubuntu:26.04:LTS | mariadb-connector-java | no fix listed | UBUNTU-CVE-2026-119277 |
| Ubuntu:26.10 | mariadb-connector-java | no fix listed | UBUNTU-CVE-2026-119277 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| mariadb-corporation | mariadb-connector-j | >= 3.0.0, < 3.3.7>= 3.4.0, < 3.4.5>= 3.5.0, < 3.5.11 |
Weakness: CWE-125, CWE-130 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-wfxr-v78w-p49r x_refsource_CONFIRM
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/49c92adfcf816853e324031ba9762a69444cfd12 x_refsource_MISC
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/52538206298db39062ad67939f1446b767cacde4 x_refsource_MISC
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/ea8c7b6537e50053444188a9a3fd9cae99550f56 x_refsource_MISC
- https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7 x_refsource_MISC
- https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5 x_refsource_MISC
- https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.11 x_refsource_MISC