---
title: "CVE-2026-102469: Eclipse Vert.x - Insecure Deserialization"
description: "Eclipse Vert.x versions [4.0.0, 4.5.34], [5.0.0, 5.0.12], [5.1.0, 5.1.9], and 5.2.0 contain an insecure deserialization vulnerability in vertx-db2-client caused by deserializing UDT column data without filtering, letting a malicious or MITM DRDA server execute remote code or cause DoS, exploit requires attacker-controlled DRDA server or MITM position."
url: https://panop.io/threat-heartbeat/CVE-2026-102469/
---

# CVE-2026-102469 Eclipse Vert.x - Insecure Deserialization

Eclipse Vert.x versions \[4.0.0, 4.5.34\], \[5.0.0, 5.0.12\], \[5.1.0, 5.1.9\], and 5.2.0 contain an insecure deserialization vulnerability in vertx-db2-client caused by deserializing UDT column data without filtering, letting a malicious or MITM DRDA server execute remote code or cause DoS, exploit requires attacker-controlled DRDA server or MITM position.

CVSS base score 9.2 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-102469)

## Details

Type

Insecure Deserialization

Impact

Remote Code Execution, Denial Of Service

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/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-502](https://cwe.mitre.org/data/definitions/502.html)

## Vendor fix

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

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-2026-102469](https://nvd.nist.gov/vuln/detail/CVE-2026-102469)
- [https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-j4vf-w939-pgxf](https://github.com/eclipse-vertx/vertx-sql-client/security/advisories/GHSA-j4vf-w939-pgxf)
- [https://gitlab.eclipse.org/security/cve-assignment/-/work\_items/347](https://gitlab.eclipse.org/security/cve-assignment/-/work_items/347)

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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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