CVE-2025-32962 json
Flask-AppBuilder open redirect vulnerability using HTTP host injection
published 2025-05-16 17 mo ago modified 2026-09-10 1 mo ago also EUVD-2025-15450 , GHSA-99pm-ch96-ccp2 , PYSEC-2026-1379
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi flask-appbuilder 4.6.2
- flask-appbuilder_project flask-appbuilder 4.6.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 17 mo ago
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | flask-appbuilder | <4.6.2 |
4.6.2 |
Affected products
- dpgaspar Flask-AppBuilder
Classification
- Weakness
-
- CWE-601 URL Redirection to Untrusted Site
References
-
github.com
/dpgaspar/Flask-AppBuilder/commit/32eedbbb5cb483a3e782c5f2732de4a6a650d9b6
web, patch
-
github.com
/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-99pm-ch96-ccp2
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-32962
advisory
-
github.com
/dpgaspar/Flask-AppBuilder
package
-
pypi.org
/project/flask-appbuilder
package
-
github.com
/advisories/GHSA-99pm-ch96-ccp2
advisory
Sources
- CVE List CVE-2025-32962
- GitHub Advisory GHSA-99pm-ch96-ccp2
- NVD CVE-2025-32962
- OSV PYSEC-2026-1379
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.