CVE-2025-13384

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).

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 31% of CVEs (scores of 2026-10-25)

CWE

CWE-862

Published

2025-11-22

Modified

2026-10-18

Record from

the NVD, synced 2026-10-19

References

• 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

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