Subscription & Recurring Payment for WooCommerce <= 2.5.1 - Unauthenticated Server-Side Request Forgery via PayPal Webhook Certificate URL
- ID
- WPSEC-2026-2948
- Plugin
- Subscriptions for WooCommerce with Stripe Recurring Payments (subscription)
- Affected
- all versions before 2.5.2
- Remediation
- Update to 2.5.2 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-918
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-11-12
- Attack surface
- Subscription & Recurring Payment for WooCommerce on WPSec AttackSurface
- Fix released
- Published
Description
The Subscriptions for WooCommerce with Stripe Recurring Payments plugin for WordPress is vulnerable to Server-Side Request Forgery via the PAYPAL-CERT-URL header of the PayPal webhook endpoint in all versions up to, and including, 2.5.1, due to the manual webhook signature verification fallback fetching the request-supplied certificate URL with wp_remote_get() without restricting it to PayPal hosts. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations, including internal services, from the web application. Because the fetched certificate is trusted for signature verification, attackers who know the configured webhook ID (or where none is configured) can also forge webhook events.
References
- https://wpsec.com/vuln/WPSEC-2026-2948/
- https://plugins.svn.wordpress.org/subscription/tags/2.5.2/
- https://wordpress.org/plugins/subscription/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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