Description
phpMyFAQ from 4.2.0-alpha before 4.2.0-beta contains a stored cross-site scripting vulnerability in SvgSanitizer that allows FAQ editors to store executable SVG files. Attackers can split script tags around removed tokens like processing instructions so single-pass removal reassembles them, executing script in the application origin when victims open the file.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| thorsten | phpMyFAQ | 4.2.0-alpha – < 4.2.0-beta | 4.2.0-beta |
References
- GitHub Security Advisory (GHSA-95fm-rwq4-rxrf) vendor-advisory
- VulnCheck Advisory: phpMyFAQ 4.2.0-alpha before 4.2.0-beta Stored XSS via SVG Upload Sanitizer Bypass third-party-advisory