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.

Metrics

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00209.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

No data.

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No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/vert-x3/vertx-redis-client/security/advisories/GHSA-4wf9-p5hg-98w5 cve-icon cve-icon
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/343 cve-icon cve-icon
History

Sat, 17 Oct 2026 01:45:00 +0000

Type Values Removed Values Added
Title Eclipse Vert.x Redis Client OutOfMemoryError Vulnerability

Sat, 17 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 15 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-770

Thu, 15 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Description 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.
References
Metrics cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published:

Updated: 2026-10-15T14:34:24.521Z

Reserved: 2026-09-29T08:30:08.305Z

Link: CVE-2026-102465

cve-icon Vulnrichment

Updated: 2026-10-15T14:34:06.211Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-15T08:16:36.540

Modified: 2026-10-15T15:17:19.063

Link: CVE-2026-102465

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T01:30:14Z

Weaknesses