CVE-2021-4074

MediumCVSS 5.4/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79CWE-862

Affected software

VendorProductVersions
WHMCS BridgeWHMCS Bridge>= 6.1, <= 6.1

References

Timeline

Published
Jan 18, 2022
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-4074: Medium severity, CVSS 5.4 | Vulnix