XSS in Thorsten Phpmyfaq
CVE-2026-46363
phpMyFAQ before 4.1.2 contains a stored cross-site scripting vulnerability in FAQ creation and update endpoints that bypass sanitization through encode-decode cycles. The vulnerability allows authenticated attackers with FAQ_ADD permission to inject malicious script tags via question or answer parameters, which execute in every visitor's browser when FAQ content is rendered with the raw Twig filter.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (15.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Thorsten Phpmyfaq — versions 0, 4.1.2
Weakness classification (CWE)
References
- github.com/thorsten/phpMyFAQ/security/advisories/GHSA-f5p7-2c9q-8896 (vendor-advisory)
- www.vulncheck.com/advisories/phpmyfaq-stored-xss-in-faq-question-answer-via-enc… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-46363?
- CVE-2026-46363 is a medium-severity vulnerability in Thorsten Phpmyfaq, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-05-15.
- How severe is CVE-2026-46363?
- Medium severity. CVSS v3 base score is 5.4 out of 10.