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Back to active CVEs
Medium ยท CVSS 5.9CVE-2026-119281

MariaDB Connector/J: Server could switch character_set_results away from UTF-8 without the client noticingCVE-2026-119281

Answer in brief

CVE-2026-119281 records a Medium severity (CVSS 5.9) vulnerability in MariaDB Connector/J: Server could switch character_set_results away from UTF-8 without the client noticing. The current sources do not mark it as known exploited. The current feed maps mariadb-corporation/mariadb-connector-j (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 29, 2026Updated Oct 29, 2026Source checked Oct 29, 2026First seen by HOL Oct 29, 2026Material review Oct 29, 2026
Upstream Advisory

Key facts

Risk
Medium ยท CVSS 5.9
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps mariadb-corporation/mariadb-connector-j (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
mariadb-corporation/mariadb-connector-jgeneric>=3.0.0 <3.3.7 || >=3.4.0 <3.4.5 || >=3.5.0 <3.5.113.3.7, 3.4.5, 3.5.11

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for mariadb-corporation/mariadb-connector-j.
  2. 2Review the reported fix. Update mariadb-corporation/mariadb-connector-j to 3.3.7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record
  2. Source modified

    Oct 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record
  3. First seen by HOL

    Oct 29, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source 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, the connector assumed result bytes were UTF-8 but guarded only changes to character_set_client. It did not reject non-UTF-8 character_set_results changes and relied on the server's global session_track_system_variables configuration to report character-set changes. A malicious or compromised server, or a machine-in-the-middle attacker, could suppress tracking or change the result charset so application strings differed from the returned bytes, potentially defeating application-side validation or escaping that depended on the decoded values. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • MariaDB Connector/J: LOAD DATA LOCAL INFILE file check could be satisfied by text inside quoted identifiers, letting a malicious server read client filesSame mariadb-corporation/mariadb-connector-j package
  • MariaDB Connector/J: Rogue server can drive large heap allocations from server-declared lengths in OK packetsSame mariadb-corporation/mariadb-connector-j package
  • MariaDB Connector/J: Rogue server can make the client read past the packet through server-declared lengthsSame mariadb-corporation/mariadb-connector-j package
  • MariaDB Connector/J: Rogue server can crash the client during caching_sha2_password authenticationSame mariadb-corporation/mariadb-connector-j package
  • MariaDB Connector/J: Length-encoded integers larger than Integer.MAX_VALUE were truncated before being used as lengthsSame mariadb-corporation/mariadb-connector-j package
  • MariaDB Connector/J : XA recover() trusted server-supplied gtrid and bqual lengthsSame mariadb-corporation/mariadb-connector-j package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-838
Source
CVE List V5
Source checked
Oct 29, 2026
References
7 linked sources
Open source record