Description
phpMyFAQ 4.2.0-alpha before 4.2.0-beta contains a stored cross-site scripting vulnerability in SvgSanitizer that allows users with FAQ_EDIT permission to bypass sanitization using XML DTD custom entities. Attackers can upload an SVG defining an entity that expands to javascript in an anchor href, executing script when viewers click it to hijack admin sessions.
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-j3v5-p957-w6gq) vendor-advisory
- VulnCheck Advisory: phpMyFAQ 4.2.0-alpha before 4.2.0-beta Stored XSS via SVG DTD Entity Bypass third-party-advisory