5.9

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

Awaiting analysis
AliasesDEBIAN-CVE-2026-119281GHSA-grfq-r75j-rw9xUBUNTU-CVE-2026-119281
Published 29-10-2026Last modified 29-10-2026

Vulnerability summary

CVE-2026-119281 is a medium (CVSS 5.9) vulnerability in mariadb-corporation mariadb-connector-j. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 20.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.28%
0%100%
Low · Change unavailable
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 29-10-2026
    PublishedVulnerability first disclosed.

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

30-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard31 products
  • airbyte-platform-fips-serverAll versions (No fix recorded) | < 2.4.0-r3
  • airbyte-platform-serverAll versions (No fix recorded) | < 2.4.0-r3
  • camunda-8.8All versions (No fix recorded)
  • camunda-8.9All versions (No fix recorded) | < 8.9.26-r2
  • camunda-zeebe-8.8All versions (No fix recorded)
Wolfi9 products
  • debezium-3.5-connector-jdbcAll versions (No fix recorded) | < 3.5.2-r14
  • debezium-3.5-connector-mariadbAll versions (No fix recorded) | < 3.5.2-r14
  • debezium-3.6-connector-jdbcAll versions (No fix recorded)
  • debezium-3.6-connector-mariadbAll versions (No fix recorded)
  • debezium-3.7-connector-jdbcAll versions (No fix recorded) | < 3.7.0-r3
Debian1 product
  • mariadb-connector-javaAll versions (No fix recorded)
Mariadb-corporation1 product
Org.mariadb.jdbc1 product
  • mariadb-java-client≥ 3.0.0, < 3.3.7 | ≥ 3.4.0, < 3.4.5 | ≥ 3.5.0, < 3.5.11
Ubuntu1 product
  • mariadb-connector-javaAll versions (No fix recorded)

6 vendors · 44 products

References

13 links
Show all 13 references