CVE-2026-103224

In Eclipse Vert.x versions [4.0.0, 4.5.34] or [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the MySQL message decoder aggregates inbound multi-packet payloads into a composite direct-memory buffer without any cumulative size limit. A malicious, compromised, or man-in-the-middle MySQL server can send a continuous stream of packets with the maximum payload length (0xFFFFFF), preventing the end-of-message condition from being reached, causing unbounded direct-memory allocation on the client and leading to an out-of-memory crash. This occurs before authentication completes. The impacted component is io.vertx:vertx-mysql-client.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-75hv-9xj3-3cr8	Vendor Advisory
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/353	Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:eclipse:vert.x::::::::
	cpe:2.3:a:eclipse:vert.x::::::::
	cpe:2.3:a:eclipse:vert.x:5.2.0:::::::*

History

20 Oct 2026, 19:25

Type	Values Removed	Values Added
CPE		cpe:2.3:a:eclipse:vert.x:::::::: cpe:2.3:a:eclipse:vert.x:5.2.0:::::::*
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.9
First Time		Eclipse Eclipse vert.x
References	~~() https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-75hv-9xj3-3cr8 -~~	() https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-75hv-9xj3-3cr8 - Vendor Advisory
References	~~() https://gitlab.eclipse.org/security/cve-assignment/-/work_items/353 -~~	() https://gitlab.eclipse.org/security/cve-assignment/-/work_items/353 - Issue Tracking, Third Party Advisory

16 Oct 2026, 19:17

Type	Values Removed	Values Added
CWE		CWE-789

15 Oct 2026, 09:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-15 09:17

Updated : 2026-10-20 19:25

NVD link : CVE-2026-103224

Mitre link : CVE-2026-103224

CVE.ORG link : CVE-2026-103224

JSON object : View

Products Affected

eclipse

vert.x

CWE

CWE-789

Memory Allocation with Excessive Size Value

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