Clinked Client Portal <= 1.9 - Authenticated (Contributor+) Stored Cross-Site Scripting
Vulnerability Description
The Clinked Client Portal plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'clinked-login-button' shortcode in all versions up to, and including, 1.9 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Peter Thaleikis
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/417b9dfe-2571-4816-af55-c7cb7dfa62c6?source=cve
- https://plugins.trac.wordpress.org/browser/clinked-client-portal/trunk/clinked-wordpress-plugin.php#L87
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3229331%40clinked-client-portal&new=3229331%40clinked-client-portal&sfp_email=&sfph_mail=
Affected Vendor
clinked
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