Cross-site scripting in phpMyFAQ - #VU130121
Published: May 5, 2026
Vulnerability identifier: #VU130121
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Thorsten Rinne
Affected software:
phpMyFAQ
phpMyFAQ
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary JavaScript in a victim's browser within the application origin.
The vulnerability exists due to improper neutralization of input during web page generation in SvgSanitizer::decodeAllEntities() when processing uploaded SVG files containing deeply nested entity-encoded javascript: links. A remote user can upload a specially crafted SVG file to execute arbitrary JavaScript in a victim's browser within the application origin.
User interaction is required, as the victim must click the malicious link embedded in the rendered SVG.
Remediation
Install security update from vendor's website.