CVE-2026-76209

phpMyFAQ before v4.1.6 Registration Bypass via API

Published: Aug 19, 2026Updated: Sep 1, 2026 Sources: CVE List NVDCWE-862

4.3MEDIUM

Description

phpMyFAQ versions before v4.1.6 fail to validate the security.enableRegistration setting in API endpoints, allowing attackers to create user accounts when registration is disabled. Attackers can bypass the registration restriction by submitting requests to POST /api/register or POST /api/v3.1/register endpoints, which do not check the configuration flag enforced by the HTML registration page.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:LIntegrity

Low

A:NAvailability

None

Open in CVSS calculator →

Weaknesses

CWE-862

Affected Products

thorsten

individual-devaka thorsten/phpmyfaq, phpmyfaq

phpMyFAQOn-premWeb App

oss-project

Exploitability

Workaround Available

Is your org exposed to CVE-2026-76209?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques

Initial Access

View detailed technique mapping

References

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-h7q4-qgc4-c9vm

github.com

https://www.vulncheck.com/advisories/phpmyfaq-before-registration-bypass-via-api

vulncheck.com

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-76209 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows