CVE-2026-121970
Description
Pay with Vipps and MobilePay for WooCommerce (woo-vipps) before 6.4.1 contains an improper cryptographic signature verification vulnerability in the recurring-payment webhook handler that allows unauthenticated attackers to forge webhook requests when no local webhook secret is stored, because the code fails to return on an empty secret and computes an HMAC keyed with an empty string using a loose == comparison instead of hash_equals. Attackers can craft a recurring.agreement-stopped.v1 event with a known agreementId and a matching empty-key signature to cancel a victim's active WooCommerce subscription.
How to fix
- Pay with Vipps and MobilePay for WooCommerce (woo-vipps)6.4.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Pay with Vipps and MobilePay for WooCommerce (woo-vipps) | No range specified | 6.4.1 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.