Flask-AppBuilder Has No Rate Limiting on Login AUTH DB
Impact
Lack of rate limiting will allow an attacker to brute-force user credentials.
Patches
Ability to enable rate limiting on Flask-AppBuilder >= 4.3.0. Use AUTH_RATE_LIMITED = True and RATELIMIT_ENABLED = True set the limit itself by using AUTH_RATE_LIMIT. Will apply only to database authentication.
Workarounds
Implement rate limiting using a reverse proxy or other strategies.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | flask-appbuilder | < 4.3.0 | 4.3.0 |
References
- https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-9hcr-9hcv-x6pv
- https://nvd.nist.gov/vuln/detail/CVE-2023-29005
- https://github.com/dpgaspar/Flask-AppBuilder/pull/1976
- https://flask-limiter.readthedocs.io/en/stable/configuration.html
- https://github.com/dpgaspar/Flask-AppBuilder
- https://github.com/dpgaspar/Flask-AppBuilder/releases/tag/v4.3.0
- https://pypi.org/project/flask-appbuilder
- https://github.com/advisories/GHSA-9hcr-9hcv-x6pv
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-307- Platform
- Python (PyPI)
- Package
flask-appbuilder- Disclosed
- 10.04.2023
- Updated
- 11.10.2026 13:18
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-1380 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-9hcr-9hcv-x6pv - CC BY 4.0
Vulnerability history: flask-appbuilder
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 14
- First → latest
- 05.2021 09.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 2
- Medium 9
- Low 2
Disclosures per year
- 2021: 3
- 2022: 3
- 2023: 2
- 2024: 3
- 2025: 3
- 2026: 0
-
Flask-AppBuilder Has No Rate Limiting on Login AUTH DB this entry
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