title: WHMCS Bridge <= 6.1 Subscriber+ Stored Cross-Site Scripting
description: The WHMCS Bridge WordPress plugin is vulnerable to Stored Cross-Site Scripting via the cc_whmcs_bridge_url parameter found in the ~/whmcs-bridge/bridge_cp.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 6.1. Due to missing authorization checks on the cc_whmcs_bridge_add_admin function, low-level authenticated users such as subscribers can exploit this vulnerability.
problem types: CWE-79 Cross-site Scripting (XSS)
affected:
{
product: WHMCS Bridge
vendor: WHMCS Bridge
versions:
lessThanOrEqual: 6.1, status: affected, version: 6.1, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 6.4
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: LOW
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
version: 3.1
]
solutions: Update to version 6.3, or newer.