Improper handling of highly compressed data in Vert.x - CVE-2026-102467
Published: November 10, 2026
Vulnerability identifier: #VU164372
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-102467
CWE-ID: CWE-409
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service through excessive memory consumption.
The vulnerability exists due to missing memory allocation limits in the Vert.x WebSocket implementation when decompressing frames or messages. A remote attacker can send compressed WebSocket frames or messages containing a zip bomb to exhaust memory and disrupt service.
Affected software
Vert.x
How to mitigate CVE-2026-102467
Install security update from vendor's website.
Vert.x - addressed in versions 4.5.35, 5.1.10, 5.2.1