CVE-2026-31904
Authentication Request Rate Limiting Flaw in WebSocket API Enables DoS, Brute-Force
Publication date: 2026-03-20
Last updated on: 2026-05-06
Assigner: ICS-CERT
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| ctek | charge_portal | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-307 | The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists because the WebSocket Application Programming Interface does not limit the number of authentication requests that can be made. Without rate limiting, an attacker can repeatedly send authentication requests without restriction.
This lack of restriction can be exploited to perform denial-of-service attacks by interfering with legitimate charger telemetry data, either by suppressing it or mis-routing it. Additionally, attackers may attempt brute-force attacks to gain unauthorized access.
How can this vulnerability impact me? :
The vulnerability can impact you by enabling attackers to disrupt normal operations through denial-of-service attacks, which can suppress or mis-route legitimate telemetry data from chargers.
Furthermore, it can allow attackers to attempt brute-force attacks to gain unauthorized access, potentially compromising system security.
Overall, this can lead to service outages, loss of data integrity, and unauthorized control over the affected systems.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know