WebSocket Vulnerability in Eclipse Vert.x across Multiple Versions
CVE-2026-102467

8.7HIGH

Key Information:

Vendor

Eclipse Foundation

Status
Eclipse Vert.x
Vendor
CVE Published:
15 October 2026

What is CVE-2026-102467?

In certain versions of Eclipse Vert.x, the WebSocket implementation lacks a limit on byte allocation during the decompression of frames or messages. This oversight can enable attackers to exploit the system using a zip bomb, resulting in Denial of Service (DoS) attacks. It is crucial for users and administrators to patch affected versions to safeguard their applications from potential disruptions.

Affected Version(s)

Eclipse Vert.x 4.0.0 <= 4.5.34

Eclipse Vert.x 5.0.0 <= 5.0.12

Eclipse Vert.x 5.1.0 <= 5.1.9

References

https://github.com/eclipse-vertx/vert.x/security/advisori...
https://gitlab.eclipse.org/security/cve-assignment/-/work...

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mike Read
.