How severe is GHSA-fqxj-46wg-9v84?

GHSA-fqxj-46wg-9v84 has a CVSS score of 4.3/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-fqxj-46wg-9v84?

GHSA-fqxj-46wg-9v84 affects the following packages: flask-appbuilder (PyPI). Ecosystems affected: PyPI.

How do I fix GHSA-fqxj-46wg-9v84?

Update flask-appbuilder to 4.2.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fqxj-46wg-9v84 is resolved across your whole dependency graph.

How do I detect GHSA-fqxj-46wg-9v84 in my PyPI dependencies?

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.

How do I mitigate GHSA-fqxj-46wg-9v84 if there is no patch (or I can't update yet)?

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 does O3 Security protect against GHSA-fqxj-46wg-9v84?

O3 pinpoints whether GHSA-fqxj-46wg-9v84 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-fqxj-46wg-9v84 actively exploited in the wild?

No public exploit code has been indexed for GHSA-fqxj-46wg-9v84 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-fqxj-46wg-9v84?

GHSA-fqxj-46wg-9v84 has an EPSS (Exploit Prediction Scoring System) score of 0.6%, placing it in the 42th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was GHSA-fqxj-46wg-9v84 published, and has it been updated?

GHSA-fqxj-46wg-9v84 was published on February 28, 2024 and was last updated on April 1, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐍 PyPI

GHSA-fqxj-46wg-9v84

MEDIUM

Flask-AppBuilder's OAuth login page subject to Cross Site Scripting (XSS)

Also known asCVE-2024-27083

Published

Feb 28, 2024

Updated

Apr 1, 2025

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

EPSS Exploitation Probability

via FIRST.org ↗

0.6%probability of exploitation in next 30 days

Lower Risk42th percentile-0.06%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

🐍flask-appbuilder

Real-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

A Cross-Site Scripting (XSS) vulnerability has been discovered on the OAuth login page. An attacker could trick a user to follow a specially crafted URL to the OAuth login page. This URL could inject and execute malicious javascript code that would get executed on the user's browser.

Impacted versions: Flask-AppBuilder version 4.1.4 up to and including 4.2.0

Patches

This issue was introduced on 4.1.4 and patched on 4.2.1, user's should upgrade to 4.2.1 or newer versions.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐍PyPI	`flask-appbuilder`	≥ 4.1.4&&< 4.2.1	4.2.1

Detection & mitigation playbook

Open-source dependency

Detect
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 4.2.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fqxj-46wg-9v84 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-fqxj-46wg-9v84 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-fqxj-46wg-9v84. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact A Cross-Site Scripting (XSS) vulnerability has been discovered on the OAuth login page. An attacker could trick a user to follow a specially crafted URL to the OAuth login page. This URL could inject and execute malicious javascript code that would get executed on the user's browser. Impacted versions: Flask-AppBuilder version 4.1.4 up to and including 4.2.0 ### Patches This issue was introduced on 4.1.4 and patched on 4.2.1, user's should upgrade to 4.2.1 or newer versions.

O3 Security · Impact-Aware SCA

Is GHSA-fqxj-46wg-9v84 in your dependencies?

O3 detects GHSA-fqxj-46wg-9v84 across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works