Resource Allocation Issue in TooTallNate Java-WebSocket Component
CVE-2026-90584

6.9MEDIUM

Key Information:

Vendor

Tootallnate

Status
Java-websocket
Vendor
CVE Published:
13 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90584?

A vulnerability exists in the TooTallNate Java-WebSocket library where improper handling in the Fragmentation Handler's processFrameContinuousAndNonFin function allows remote attackers to exploit resource allocation issues. This weakness could be manipulated to exhaust resources, leading to service disruptions. The exploit for this vulnerability is publicly accessible, raising concerns for users of the affected Java-WebSocket versions. A pull request addressing the issue is under review.

Affected Version(s)

Java-WebSocket 1.6.0

Java-WebSocket 1.6.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-90584 - Proof of Concept

References

https://vuldb.com/vuln/403169
vdb-entrytechnical-description
https://vuldb.com/vuln/403169/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90584
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

emiya (VulDB User)
VulDB CNA Team
.