---
title: "CVE-2026-102465: Eclipse Vert.x - Denial of Service"
description: "Eclipse Vert.x Redis client in versions 4.0.0 to 4.5.34, 5.0.0 to 5.0.12, 5.1.0 to 5.1.9, and 5.2.0 contains a denial of service caused by unbounded array pre-allocation in the RESP parser, letting attackers cause event loop crashes via crafted RESP responses, exploit requires attacker to control or intercept Redis server responses."
url: https://panop.io/threat-heartbeat/CVE-2026-102465/
---

# CVE-2026-102465 Eclipse Vert.x - Denial of Service

Eclipse Vert.x Redis client in versions 4.0.0 to 4.5.34, 5.0.0 to 5.0.12, 5.1.0 to 5.1.9, and 5.2.0 contains a denial of service caused by unbounded array pre-allocation in the RESP parser, letting attackers cause event loop crashes via crafted RESP responses, exploit requires attacker to control or intercept Redis server responses.

CVSS base score 8.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-102465)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Published

15 October 2026

Updated

15 October 2026

Weakness

[CWE-770](https://cwe.mitre.org/data/definitions/770.html)

## Vendor fix

Update to a version later than 5.2.0 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-102465](https://nvd.nist.gov/vuln/detail/CVE-2026-102465)
- [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)
- [https://gitlab.eclipse.org/security/cve-assignment/-/work\_items/343](https://gitlab.eclipse.org/security/cve-assignment/-/work_items/343)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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