What’s Vulnerable › Vulnerabilities

CVE-2025-6688: Simple Payment 1.3.6 - 2.3.8 - Authentication Bypass to Admin

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-06-27 · updated 2026-06-17
• Weakness: CWE-288

Description

The Simple Payment plugin for WordPress is vulnerable to Authentication Bypass in versions 1.3.6 to 2.3.8. This is due to the plugin not properly verifying a user's identity prior to logging them in through the create_user() function. This makes it possible for unauthenticated attackers to log in as administrative users.

Affected products

• idokd Simple Payment: from 1.3.6 before 2.3.9 — fixed in 2.3.9

How to fix

Upgrade to a fixed version: idokd Simple Payment 2.3.9. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/3318371/simple-payment/tags/2.3.9/simple-payment-plugin.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/8b4e2f87-e3ad-4f1b-b647-f5e5a49f691b?source=cve

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