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TI-2026-51651 Aliases CVE-2026-73561GHSA-g5vv-q72c-7j78

Hub: Unauthenticated WebSocket RPC Waiter Resource Exhaustion

Priority HIGH 72CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-400.

Summary

Hub is a Node.js WebSocket server and client with added features. Prior to 0.2.16, every incoming unauthenticated WebSocket connection triggers loadDefaultConnectionEventListeners to call requestClientId, which calls rpc.send for the get-client-id action and pushes a request into RPC.requests. The RPC.waitForReply function starts a setInterval polling loop every 10 milliseconds that is cleared only after a matching reply; if the client remains silent and closes, the timer and pending request stay allocated because the socket close path does not cancel them. Repeated connections therefore cause unbounded timers and heap entries, exhausting CPU and memory and making the server unavailable. This issue is fixed in version 0.2.16.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00609 49th percentileScored 2026-11-07
Fix Fixed hub (anephenix): 0.2.16@anephenix/hub (npm): 0.2.16

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
anephenixhubbefore 0.2.160.2.16Patch availableCNA
—@anephenix/hub (npm)before 0.2.160.2.16Patch availableGHSA-g5vv-q72c-7j78
  • hub Vendoranephenix Affected before 0.2.16 Fixed in 0.2.16 Patch available CNA
  • @anephenix/hub (npm) Vendor— Affected before 0.2.16 Fixed in 0.2.16 Patch available GHSA-g5vv-q72c-7j78

Remediation

  • Fix · CNA hub (anephenix) Fixed in 0.2.16
  • Fix · GHSA-g5vv-q72c-7j78 @anephenix/hub (npm) Fixed in 0.2.16 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-73561
  2. 2026-10-03 Alias added: GHSA-g5vv-q72c-7j78

References

Other 5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences