{"id":"CVE-2026-18467","published":"2026-09-24T02:16:52.943","lastModified":"2026-09-24T16:17:07.393","description":"The Paytium: Mollie payment forms & donations plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 5.0.3. The 5.0.3 patch introduced a wp_hash()/hash_equals() signature gate on the pt-paytium-user-data field, but left a second filter — pt_cf_checkout_meta(), registered on the pt_meta_values hook after the signed builder — that copies every $_POST['pt_form_field'][*] key verbatim into the payment meta array without any signature verification; this allows the pt-user-role value it copies to overwrite the signed path's output, after which paytium_user_data_processing() reads the persisted _pt-user-role post meta and passes it directly as the role argument to wp_insert_user(). This makes it possible for unauthenticated attackers to register a new WordPress account with the administrator role and fully take over the site. Exploitation requires submitting a payment through a publicly-exposed [paytium] shortcode form and completing the resulting payment flow, after which the attacker can seize the new administrator account via the standard lost-password flow on their supplied email address.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-269"],"vendors":[],"products":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/paytium/tags/5.0.3/includes/payment-functions.php#L113","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/paytium/tags/5.0.3/includes/process-payment-functions.php#L1103","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/paytium/tags/5.0.3/includes/process-payment-functions.php#L21","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/paytium/tags/5.0.3/includes/process-payment-functions.php#L696","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/paytium/tags/5.0.3/includes/user-data-functions.php#L214","tags":[]},{"url":"https://plugins.trac.wordpress.org/changeset/3678569/paytium","tags":[]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/caa1a42a-6bb2-42c8-aae7-fb1c895573a8?source=cve","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The flaw allows unauthenticated attackers to escalate privileges by exploiting a vulnerability in the Paytium: Mollie plugin, enabling them to register a new administrator account and take full control of the site.","exploitability":"Exploitation is moderately hard and requires submitting a payment through a publicly-exposed [paytium] shortcode form.","blast_radius":"If exploited, the attacker can fully take over the site, impacting all users and potentially leading to data loss or theft.","remediation":"Upgrade to version 5.0.4 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","web","privilege-escalation"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-27T08:51:56.802Z"}}