What the vulnerability does
01Description
The Contact Form 7 plugin for WordPress is vulnerable to Order Replay in all versions up to, and including, 6.0.5 via the 'wpcf7_stripe_skip_spam_check' function due to insufficient validation on a user controlled key. This makes it possible for unauthenticated attackers to reuse a single Stripe PaymentIntent for multiple transactions. Only the first transaction is processed via Stripe, but the plugin sends a successful email message for each transaction, which may trick an administrator into fulfilling each order.
Explanation of Vulnerability in Simple Terms
02Summary
Contact Form 7 versions up to 6.0.5 contain an integrity vulnerability that allows unauthenticated attackers to modify data via the network. No user interaction is required. The vulnerability does not affect confidentiality or availability. Update to a version newer than 6.0.5 to remediate.
What an attacker can do
03Attacker Capabilities
Modify form data or submissions without authentication.
Potential impact on your site
04Site Impact
Form submissions or stored form data could be altered by attackers without your knowledge.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
April 16, 2025
CVE published
April 8, 2026
Record updated
