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TI-2026-82764 Aliases CVE-2026-119278

MariaDB Connector/J crash from rogue server during authentication

Priority LOW 26CWE-129Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 9 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-129 and the CVSS impact.

Summary

MariaDB Connector/J is affected from 3.0.0 before 3.3.7 and from 3.4.0 before 3.4.5. During caching_sha2_password authentication, the client mishandles an authentication-more-data response, which is a flaw in array index validation (CWE-129). A malicious or compromised server, or a machine-in-the-middle attacker, can send a malformed response before any password is transmitted, causing excessive memory allocation or an unchecked ArrayIndexOutOfBoundsException from DriverManager.getConnection().

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00364 30th percentileScored 2026-11-07
Fix Partial mariadb-connector-j (mariadb-corporation): 3.3.7, 3.4.5Red Hat: 9 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MariaDBmariadb-connector-j3.0.0 to before 3.3.7; 3.4.0 to before 3.4.53.3.7, 3.4.5Patch availableCNA
  • mariadb-connector-j VendorMariaDB Affected 3.0.0 to before 3.3.7; 3.4.0 to before 3.4.5 Fixed in 3.3.7, 3.4.5 Patch available CNA

Remediation

Upgrade MariaDB Connector/J to version 3.3.7 or 3.4.5, which the source description says fix this issue. Red Hat lists no available fix for Red Hat Build of Keycloak, Red Hat Enterprise Linux 8, 9 and 10, Red Hat OpenShift AI (RHOAI), Red Hat Satellite 6, Red Hat build of Debezium 3 and Red Hat build of Quarkus, and no fix planned for Red Hat OpenStack Platform 13 (Queens).

Written with Claude Haiku 5.5 from the sources below · 2026-11-02

  • Fix · CNA mariadb-connector-j (mariadb-corporation) Fixed in 3.3.7, 3.4.5

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Build of KeycloakAffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)AffectedNo fix yet: Fix deferred
Red Hat OpenStack Platform 13 (Queens)AffectedNo fix planned: Out of support scope
Red Hat Satellite 6AffectedNo fix yet: Fix deferred
Red Hat build of Debezium 3AffectedNo fix yet: Fix deferred
Red Hat build of QuarkusAffectedNo fix yet: Fix deferred
Not affected: 1 product
  • Red Hat Hardened Images

Timeline

  1. 2026-10-29 Threatist record created from CVE-2026-119278
  2. 2026-10-30 CISA SSVC decision points changed
  3. 2026-10-30 Priority changed: MEDIUM → LOW
  4. 2026-11-02 Affected versions changed · Red Hat
  5. 2026-11-02 CVSS score added · Red Hat

References

Other 5

  • TI-2023-11776 MariaDB v10.5 was discovered to contain a remote code execution (RCE) vulnerability via… CVSS 3.1CRITICAL 9.8
  • TI-2016-05707 Oracle MySQL through 5.5.52, 5.6.x through 5.6.33, and 5.7.x through 5.7.15; MariaDB… CVSS 3.0CRITICAL 9.8
  • TI-2022-00687 Infinite loop in BN_mod_sqrt() reachable when parsing certificates CVSS 3.1HIGH 7.5
  • TI-2014-00217 OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly… CVSS 3.1HIGH 7.4
  • TI-2014-00188 The dtls1_reassemble_fragment function in d1_both.c in OpenSSL before 0.9.8za, 1.0.0… CVSS 2.0MEDIUM 6.8
  • TI-2018-15259 zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if… CVSS 3.1HIGH 7.5
See all 459 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences