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.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 04 Nov 2026 13:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Pay with Vipps and MobilePay for WooCommerce before 6.4.1 Webhook Signature Forgery | |
| First Time appeared |
Wphostingdev
Wphostingdev pay With Vipps And Mobilepay For Woocommerce |
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| Weaknesses | CWE-347 | |
| CPEs | cpe:2.3:a:wphostingdev:pay_with_vipps_and_mobilepay_for_woocommerce:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Wphostingdev
Wphostingdev pay With Vipps And Mobilepay For Woocommerce |
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| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-11-04T13:01:41.868Z
Reserved: 2026-11-04T12:58:32.302Z
Link: CVE-2026-121970
No data.
Status : Received
Published: 2026-11-04T13:17:29.670
Modified: 2026-11-04T13:17:29.670
Link: CVE-2026-121970
No data.
OpenCVE Enrichment
No data.
Weaknesses