Formio improperly authorized permission elevation through specially crafted request path

Security Advisory: Unauthorized permission elevation through specially crafted request path

Summary: A flaw in path handling could allow an attacker to access protected API endpoints by sending a crafted request path. This issue could result in unauthorized data disclosure under certain configurations.

Impact: In affected configurations, an unauthenticated or unauthorized request could retrieve data from endpoints that should be protected.

Affected versions:
<= 3.5.6
<= 4.4.2

Fixed in:
3.5.7
4.4.3

Mitigation / Workarounds:
Upgrade to 3.5.7 or later.

Disclosure timeline:
Discovered 2025-05-22; fixed 2025-05-30; publicly disclosed 2025-12.