CVE-2026-34974

MediumCVSS 5.4/10Last modified Jul 24, 2026

Description

phpMyFAQ is an open source FAQ web application. Prior to version 4.1.1, the regex-based SVG sanitizer in phpMyFAQ (SvgSanitizer.php) can be bypassed using HTML entity encoding in javascript: URLs within SVG <a href> attributes. Any user with edit_faq permission can upload a malicious SVG that executes arbitrary JavaScript when viewed, enabling privilege escalation from editor to full admin takeover. This issue has been patched in version 4.1.1.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
thorsten	phpMyFAQ	< 4.1.1

References

https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1Product
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5crx-pfhq-4hggExploit, Vendor Advisory
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5crx-pfhq-4hggExploit, Vendor Advisory

Timeline

Published: Apr 2, 2026
Last modified: Jul 24, 2026
NVD status: Analyzed

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