{"id":"CVE-2021-4074","aliases":["EUVD-2021-33967","GHSA-25m8-2fq7-2r56"],"status":"published","title":"WHMCS Bridge \u003c= 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.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00558,"percentile":0.4676,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79","CWE-862"],"published":"2022-01-18T16:52:27Z","modified":"2026-06-17T04:18:59Z","products":[{"vendor":"i-plugins","product":"whmcs_bridge"},{"vendor":"whmcs bridge","product":"whmcs bridge"}],"references":[{"url":"https://www.wordfence.com/vulnerability-advisories/#CVE-2021-4074","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=2653041%40whmcs-bridge\u0026new=2653041%40whmcs-bridge\u0026sfp_email=\u0026sfph_mail=","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4074"},{"url":"https://github.com/advisories/GHSA-25m8-2fq7-2r56"}],"sources":{"cve":[{"id":"CVE-2021-4074","title":"WHMCS Bridge \u003c= 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.","status":"published","published":"2022-01-18T16:52:27Z","modified":"2025-02-14T17:47:58.874Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79","CWE-862"],"updated_at":"2026-11-02T14:33:08.045407Z"}],"euvd":[{"id":"EUVD-2021-33967","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.","status":"published","published":"2022-01-18T16:52:27Z","modified":"2025-02-14T17:47:58Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T20:53:30.344132Z"}],"ghsa":[{"id":"GHSA-25m8-2fq7-2r56","title":"The WHMCS Bridge WordPress plugin is vulnerable to Stored Cross-Site Scripting via the...","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.","status":"published","published":"2022-01-19T00:01:06Z","modified":"2023-02-03T05:04:53Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:53:38.626767Z"}],"nvd":[{"id":"CVE-2021-4074","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.","status":"published","published":"2022-01-18T17:15:09.29Z","modified":"2026-06-17T04:18:59.757Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79","CWE-862"],"updated_at":"2026-11-02T14:07:03.821385Z"}]}}