CVE-2026-119278: Mariadb connector java · MariaDB Connector/J is used to connect applications developed in Java to
Affects mariadb-connector-javaSource GCVE Database
Not known to be exploited · CVSS 5.9 Medium · fixed in 3.3.7 : update mariadb-connector-java when convenient.
Data as of 5 Nov 2026, 12:35 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 5.9 |
|---|
- Patch
- Available – fixed in 3.3.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 29 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10mariadb-connector-javapkg:deb/ubuntu/mariadb-connector-java?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSmariadb-connector-javapkg:deb/ubuntu/mariadb-connector-java?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSmariadb-connector-javapkg:deb/ubuntu/mariadb-connector-java?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSmariadb-connector-javapkg:deb/ubuntu/mariadb-connector-java?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 20.04 LTSmariadb-connector-javapkg:deb/ubuntu/mariadb-connector-java?arch=source&distro=focalOther threats | Affected
| Fixed in– |
Ubuntu 18.04 LTSmariadb-connector-javapkg:deb/ubuntu/mariadb-connector-java?arch=source&distro=bionicOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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 and 3.4.5, during caching_sha2_password authentication, the authentication-more-data response was treated as a length-encoded byte array, memory was allocated from the server-declared length, and authResult[0] was accessed without ensuring a byte existed. A malicious or compromised server, or a machine-in-the-middle attacker, could declare a very large length or send an empty response before any password was transmitted. The malformed packet could cause excessive allocation or an unchecked ArrayIndexOutOfBoundsException escaping from DriverManager.getConnection(). This issue is fixed in versions 3.3.7 and 3.4.5.
References
- ubuntu.com/security/CVE-2026-119278 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-119278 (opens in a new tab)
- github.com/mariadb-corporation/mariadb-connector-j/commit/1e32b7010485f090cc402528c334301432495fbe (opens in a new tab)
- github.com/mariadb-corporation/mariadb-connector-j/commit/86a90b0dc9746aa3bd4aa1df264be22a2d1b7d98 (opens in a new tab)
- github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7 (opens in a new tab)
- github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5 (opens in a new tab)
- github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-r9vh-xh4r-j6gr (opens in a new tab)