Vulnerability Report

CVE-2026-34974

Title: phpMyFAQ SVG Sanitizer Bypass (XSS)

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2026-34974.

CWE Category CWE-79

Published Date Apr 02, 2026

Modified Date Jul 24, 2026

Exploit Status Not Found

Score 5.4 CVSS v3.1

Exploit Probability (EPSS)

0.18%

Vulnerability Summary

CVE-2026-34974: 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.

Impacted Vendors

phpmyfaq 1

Reference Links

https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1 https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5crx-pfhq-4hgg

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

5.4

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

CHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns