medium4.3
CVE-2025-32962
Flask-AppBuilder open redirect vulnerability using HTTP host injection
Impact
### Impact Flask-AppBuilder 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. ### Patches 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. Examples: ``` FAB_SAFE_REDIRECT_HOSTS = ["yourdomain.com", "sub.yourdomain.com", "*.yourcompany.com"] ``` ### Workarounds Use a Reverse Proxy to Enforce Trusted Host Headers ### References _Are there any links users can visit to find out more?_
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | flask-appbuilder | < 4.6.2 | 4.6.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Dpgaspar | Flask-Appbuilder | before 4.6.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/dpgaspar/Flask-AppBuilder/commit/32eedbbb5cb483a3e782c5f2732de4a6a650d9b6
- https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-99pm-ch96-ccp2
- https://github.com/advisories/GHSA-99pm-ch96-ccp2
- https://nvd.nist.gov/vuln/detail/CVE-2025-32962