CVE-2021-4074

WHMCS Bridge <= 6.1 Subscriber+ Stored Cross-Site Scripting

mediumImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

6.4

CVSS Score

6.4

CVSS Score

medium

Severity

6.3

Patched in

739d

Time to patch

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.

CVSS Vector Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Low

Confidentiality

Low

Integrity

None

Availability

Technical Details

Affected versions<=6.1

PublishedJanuary 14, 2022

Last updatedJanuary 22, 2024

Affected pluginwhmcs-bridge

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/24ba85a0-dbc7-4c9d-a67f-d449c1d275ab?source=api-prod

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