CVE-2026-18467

9.8 CRITICAL

Published 2026-09-24 · Updated 2026-09-24

AI risk analysis

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.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to version 5.0.4 or later.

auth-bypasswebprivilege-escalation

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

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

Weaknesses

CWE-269

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

Related CVEs

Related by shared AI tags and CWE weakness class. Browse the full archive.