CVE-2025-13384

Impact

The CP Contact Form with PayPal plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.3.56. This is due to the plugin exposing an unauthenticated IPN-like endpoint (via the 'cp_contactformpp_ipncheck' query parameter) that processes payment confirmations without any authentication, nonce verification, or PayPal IPN signature validation. This makes it possible for unauthenticated attackers to mark form submissions as paid without making actual payments by sending forged payment notification requests with arbitrary POST data (payment_status, txn_id, payer_email).

Affected packages

This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.

Weakness classification

References

• NVD record
• CVE.org record
• https://plugins.trac.wordpress.org/browser/cp-contact-form-with-paypal/tags/1.3.56/cp_contactformpp_functions.php#L541
• https://plugins.trac.wordpress.org/browser/cp-contact-form-with-paypal/tags/1.3.56/cp_contactformpp_functions.php#L877
• https://plugins.trac.wordpress.org/browser/cp-contact-form-with-paypal/tags/1.3.56/cp_contactformpp_functions.php#L925
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3399104%40cp-contact-form-with-paypal&new=3399104%40cp-contact-form-with-paypal&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/6639c3d8-8f26-4ee5-8c4b-2efcf34668a2?source=cve