CVE-2026-34974

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

5.4 / 10

Vector String

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

Vulnerability 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.

Vulnerability Details

Published Date

April 01, 2026

Last Modified

April 06, 2026

CWE ID

CWE-79

Source

GitHub

Vendor

composer

Product

thorsten/phpmyfaq

External References

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5crx-pfhq-4hgg
https://github.com/advisories/GHSA-5crx-pfhq-4hgg

CVE-2026-34974

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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