GHSA-9hcr-9hcv-x6pv
HIGHGHSA-9hcr-9hcv-x6pv is a high-severity (CVSS 7.5) CWE-307 vulnerability in flask-appbuilder. O3 Security confirms whether GHSA-9hcr-9hcv-x6pv is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Flask-AppBuilder Has No Rate Limiting on Login AUTH DB
Blast Radius
flask-appbuilderReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
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 Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | flask-appbuilder | all versions | 4.3.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for flask-appbuilder. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update flask-appbuilder to 4.3.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-9hcr-9hcv-x6pv is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-9hcr-9hcv-x6pv is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-9hcr-9hcv-x6pv. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-9hcr-9hcv-x6pv in your dependencies?
O3 detects GHSA-9hcr-9hcv-x6pv across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.