Is this vulnerability remotely exploitable?

Yes. If the WebSocket authentication endpoint is reachable over the network, an attacker can abuse it remotely by opening connections and issuing repeated authentication attempts.

Does an attacker need valid credentials to exploit this?

No. Exploitation of the denial-of-service aspect requires only the ability to send authentication requests. Brute-force exploitation attempts do not require valid credentials, but success depends on credential strength and other defenses.

What is the safest general fix pattern?

Introduce layered rate limiting and lockout controls for authentication operations, including per-identity, per-origin, and global thresholds, and decouple authentication processing from core telemetry handling so that abuse cannot starve critical data flows.

Severity:

HIGH RISK

(7.5)

Improper Authentication Attempt Limiting (CWE-307) in WebSocket API

CVE-2026-27778

Published:

Mar 5, 2026

Status:

Received

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-78

CRITICAL RISK

CRITICAL

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Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

Remote Code Execution

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CWE-89

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Remote Code Execution via SQL Injection on the Database Server

March 7, 2026

Vulnerability Type

Category:

Improper Limiting of Authentication Attempts

CWE:

CWE-307

Impact:

Denial of Service and Brute-Force Account Compromise

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Limiting of Authentication Attempts

CWE:

CWE-307

Impact:

Denial of Service and Brute-Force Account Compromise

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Improper Authentication Attempt Limiting (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

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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