title: Flask-AppBuilder's OAuth login page subject to Cross Site Scripting (XSS)
description: Flask-AppBuilder is an application development framework, built on top of Flask. 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. This issue was introduced on 4.1.4 and patched on 4.2.1.
problem types: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
affected:
{
vendor: dpgaspar
product: Flask-AppBuilder
versions:
version: >= 4.1.4, < 4.2.1, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 4.3
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
version: 3.1
]