CVE-2026-102465

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 Vert.x Redis client RESP parser pre-allocates arrays to a length declared by the server without enforcing an upper bound. A malicious or compromised Redis server, or an attacker in a man-in-the-middle position, can send a crafted RESP response declaring an extremely large array, push, or attribute length, causing the client to attempt a massive heap allocation. The resulting OutOfMemoryError crashes the Vert.x event loop thread, denying service to all connections and verticles sharing that loop. 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/vert-x3/vertx-redis-client/security/advisories/GHSA-4wf9-p5hg-98w5	Vendor Advisory
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/343	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, 19:31

Type	Values Removed	Values Added
References	~~() https://github.com/vert-x3/vertx-redis-client/security/advisories/GHSA-4wf9-p5hg-98w5 -~~	() https://github.com/vert-x3/vertx-redis-client/security/advisories/GHSA-4wf9-p5hg-98w5 - Vendor Advisory
References	~~() https://gitlab.eclipse.org/security/cve-assignment/-/work_items/343 -~~	() https://gitlab.eclipse.org/security/cve-assignment/-/work_items/343 - Issue Tracking, Third Party Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.9
First Time		Eclipse Eclipse vert.x
CPE		cpe:2.3:a:eclipse:vert.x:::::::: cpe:2.3:a:eclipse:vert.x:5.2.0:::::::*

15 Oct 2026, 15:17

Type	Values Removed	Values Added
CWE		CWE-770

15 Oct 2026, 08:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-15 08:16

Updated : 2026-10-20 19:31

NVD link : CVE-2026-102465

Mitre link : CVE-2026-102465

CVE.ORG link : CVE-2026-102465

JSON object : View

Products Affected

eclipse

vert.x

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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