Is this vulnerability remotely exploitable?

Yes. Any remote attacker who can reach the affected phpMyFAQ instance over HTTP(S) can exploit the issue, because no authentication is required on the vulnerable endpoint.

Does an attacker need any special access or valid account?

No. The vulnerability specifically arises because the WebAuthn prepare endpoint allows account creation without an existing account, session, or any other form of prior authentication.

What is the safest general fix pattern for developers?

Enforce centralized authorization checks and registration policy validation around all user lifecycle operations. Treat every endpoint involved in account creation or activation as sensitive, require either a verified authenticated context or a tightly scoped registration token, and ensure that configuration flags (like disabled self-registration) are always consulted before creating an account.

Severity:

HIGH RISK

(7.5)

Missing Authorization in WebAuthn Prepare Endpoint (CWE-862) in phpMyFAQ

CVE-2026-27836

Published:

Feb 27, 2026

Status:

Analyzed

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

March 7, 2026

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:

Missing Authorization

CWE:

CWE-862

Impact:

Unauthorized Account Creation and Privilege Abuse

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Missing Authorization

CWE:

CWE-862

Impact:

Unauthorized Account Creation and Privilege Abuse

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Missing Authorization in WebAuthn Prepare Endpoint (CWE-862) in phpMyFAQ

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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