MariaDB Connector/J: Rogue server can make the client read past the packet through server-declared lengths

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-119277
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-29 21:17:21 UTC
Updated2026-10-29 21:17:21 UTC
DescriptionMariaDB 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, decoders for OK packet session-state blocks, column definition packets, text row data, or binary row data used server-declared lengths without confirming that the requested bytes remained in the receive buffer. The decoders could position reads, create sub-buffers, or decode strings beyond the packet boundary. A malicious or compromised server, or a machine-in-the-middle attacker, could trigger unchecked ArrayIndexOutOfBoundsException or IllegalArgumentException failures inside JDBC calls and terminate connection handling. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11.

Risk And Classification

Primary CVSS: v3.1 5.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-125 | CWE-130 | CWE-125 CWE-125: Out-of-bounds Read | CWE-130 CWE-130: Improper Handling of Length Parameter Inconsistency

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Mariadb-corporation Mariadb-connector-j affected >= 3.0.0, < 3.3.7 Not specified
CNA Mariadb-corporation Mariadb-connector-j affected >= 3.4.0, < 3.4.5 Not specified
CNA Mariadb-corporation Mariadb-connector-j affected >= 3.5.0, < 3.5.11 Not specified

References

ReferenceSourceLinkTags
github.com/mariadb-corporation/mariadb-connector-j/commit/49c92adfcf8168... [email protected] github.com
github.com/mariadb-corporation/mariadb-connector-j/commit/52538206298db3... [email protected] github.com
github.com/mariadb-corporation/mariadb-connector-j/security/advisories/G... [email protected] github.com
github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7 [email protected] github.com
github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.11 [email protected] github.com
github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5 [email protected] github.com
github.com/mariadb-corporation/mariadb-connector-j/commit/ea8c7b6537e500... [email protected] github.com
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