CVE-2025-32962 — Flask-AppBuilder open redirect vulnerability using HTTP host injection
Flask-AppBuilder is an application development framework built on top of Flask. Versions prior to 4.6.2 would allow for a malicious unauthenticated actor to perform an open redi…
Published: 2025-05-16 · CVSS: 4.3 · CVSS 3.1
Flask-AppBuilder is an application development framework built on top of Flask. Versions prior to 4.6.2 would allow for a malicious unauthenticated actor to perform an open redirect by manipulating the Host header in HTTP requests. Flask-AppBuilder 4.6.2 introduced the `FAB_SAFE_REDIRECT_HOSTS` configuration variable, which allows administrators to explicitly define which domains are considered safe for redirection. As a workaround, use a reverse proxy to enforce trusted host headers.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7