Is this vulnerability remotely exploitable?

Yes. Any attacker with network access to the exposed WebSocket API can send large numbers of authentication requests and attempt to exploit the lack of rate limiting.

What level of access is required to exploit it?

No prior authentication is needed. The attacker only needs the ability to establish WebSocket connections and send authentication messages to the affected endpoint.

What is the safest general fix pattern?

Apply robust, layered rate limiting and lockout policies around authentication endpoints, ensuring that WebSocket authentication flows are protected in the same way as traditional HTTP login routes. Complement this with strong credential policies and separation of telemetry and authentication channels where feasible.

Severity:

HIGH RISK

(7.5)

Improper Restriction of Excessive Authentication Attempts (CWE-307) in WebSocket API

CVE-2026-31904

Published:

Mar 20, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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Vulnerability Type

Category:

Authentication Rate Limiting / Brute-Force Protection Failure

CWE:

CWE-307

Impact:

Denial of Service and Brute-Force Account Compromise

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Authentication Rate Limiting / Brute-Force Protection Failure

CWE:

CWE-307

Impact:

Denial of Service and Brute-Force Account Compromise

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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Improper Restriction of Excessive Authentication Attempts (CWE-307) in WebSocket API

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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