What is CVE-2026-35672?

CVE-2026-35672 is a high-severity vulnerability in Thorsten Phpmyfaq, classified under Initialization of a Resource with an Insecure Default. CVSS score: 7.5/10. Published 2026-05-28.

How severe is CVE-2026-35672?

High severity. CVSS v3 base score is 7.5 out of 10.

RCE in Thorsten Phpmyfaq

CVE-2026-35672

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.

Published 2026-05-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.6th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002

Affected products

Thorsten Phpmyfaq — versions 0, 4.1.3

Weakness classification (CWE)

CWE-1188 — Initialization of a Resource with an Insecure Default

References

github.com/thorsten/phpMyFAQ/security/advisories/GHSA-gp95-j463-vv28 (vendor-advisory, third-party-advisory)
www.vulncheck.com/advisories/phpmyfaq-authentication-bypass-via-empty-api-token (third-party-advisory)

Frequently asked questions

What is CVE-2026-35672?: CVE-2026-35672 is a high-severity vulnerability in Thorsten Phpmyfaq, classified under Initialization of a Resource with an Insecure Default. CVSS score: 7.5/10. Published 2026-05-28.
How severe is CVE-2026-35672?: High severity. CVSS v3 base score is 7.5 out of 10.