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CVE-2026-119279VulnerabilityPublished

org.mariadb.jdbc:mariadb-java-client · MariaDB Connector/J: Length-encoded integers larger than Integer.MAX_VALUE were truncated before being used as lengths

Affects org.mariadb.jdbc:mariadb-java-clientSource GCVE Database

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Authoritative record:CVE-2026-119279· Medium 5.9

Not known to be exploited · CVSS 5.9 Medium : upgrade to 3.3.7 when convenient.

Data as of 31 Oct 2026, 02:06 UTC

CVSS 3.1 base score
5.9Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 3.15.9
Patch
Available – fixed in 3.3.7, 3.4.5, 3.5.10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 30 Oct 2026.

What to do

Upgrade org.mariadb.jdbc:mariadb-java-client to 3.3.7; org.mariadb.jdbc:mariadb-java-client to 3.4.5; org.mariadb.jdbc:mariadb-java-client to 3.5.10.

Affected software

ProductAffectedFixed in
Mavenorg.mariadb.jdbc:mariadb-java-clientAffected
  • >=3.0.0 <3.3.7
Fixed in
  • 3.3.7
Mavenorg.mariadb.jdbc:mariadb-java-clientAffected
  • >=3.4.0 <3.4.5
Fixed in
  • 3.4.5
Mavenorg.mariadb.jdbc:mariadb-java-clientAffected
  • >=3.5.0 <3.5.10
Fixed in
  • 3.5.10

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade to MariaDB Connector/J versions 3.3.7, 3.4.5, or 3.5.10 or later where this issue is fixed. The fix enforces validation of length-encoded integers to ensure they fit within a non-negative int, preventing truncation errors and related exceptions.

Description

MariaDB Connector/J versions prior to 3.3.7, 3.4.5, and 3.5.10 improperly handle 8-byte length-encoded integers by truncating values larger than Integer.MAX_VALUE to a signed int without validation. This can cause negative or arbitrary lengths leading to client crashes or oversized memory allocations when interacting with a malicious or compromised server. The vulnerability impacts availability only and requires control over the server side. No confidentiality, integrity, or authentication bypass issues are involved. Fixed versions are available.

References

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