Node.js WebSocket Server Vulnerability in Hub by Anephenix
CVE-2026-73561

7.5HIGH

Key Information:

Vendor

Anephenix

Status
Hub
Vendor
CVE Published:
13 August 2026

What is CVE-2026-73561?

The Hub Node.js WebSocket server contains a vulnerability that can lead to resource exhaustion. This occurs when unauthenticated WebSocket connections cause an unbounded accumulation of timers and pending requests due to improper handling of silent client closures. As a result, repeated connections can deplete CPU and memory resources, ultimately making the server unresponsive. This issue was addressed in version 0.2.16, which includes mitigations to prevent the allocation of resources in such scenarios.

Affected Version(s)

hub < 0.2.16

References

https://github.com/anephenix/hub/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/anephenix/hub/commit/931576db3cdbf4f15...
x_refsource_MISC
https://github.com/anephenix/hub/tree/v0.2.16
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.