🛡️ CVE-2024-27083 — flask-appbuilder

🟡 CVSS 4.3 — Medium ✅ No Known Exploit CWE-79 OSV

4.3

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

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

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

Weakness class

CVE-2024-27083 is classified as CWE-79: Cross-site Scripting (XSS). User-supplied data is written into a page without escaping, so attacker script runs in the browser of anyone who views it.

Affected software

CVE-2024-27083 is recorded against 1 package.

flask-appbuilder (from 4.1.4 up to 4.2.1)

Timeline and source

Published on 28 February 2024 and last revised on 7 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)

Details

Severity MEDIUM

CVSS Score 4.3

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CWE CWE-79

Public Exploit ✅ No

Source OSV

Published 2024-02-28

Updated 2026-08-12

Modified 2026-07-07

Fix URL https://github.com/dpgaspar/Flask-AppBuilder/commit/3d17741886e4b3c384d0570de69689e4117aa812

Affected Packages

Software	From version	Fixed in
flask-appbuilder	4.1.4	4.2.1

References

WEB https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-fqxj-46wg-9v84

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-27083

WEB https://github.com/dpgaspar/Flask-AppBuilder/commit/3d17741886e4b3c384d0570de69689e4117aa812

PACKAGE https://github.com/dpgaspar/Flask-AppBuilder

🔗 NVD 🔗 Mitre ✅ Fix / Advisory

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