Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE, CVE-2026-2892
- CVE, Research URL
- Home page URL
- Published on
- Apr 30, 2026
- Research Description
- The Otter Blocks plugin for WordPress is vulnerable to Purchase Verification Bypass in all versions up to, and including, 3.1.4. This is due to the 'get_customer_data' method relying on an unsigned 'o_stripe_data' cookie to determine Stripe product ownership for unauthenticated users. The 'check_purchase' method trusts this cookie data without performing server-side verification against the Stripe API for one-time 'payment' mode purchases. This makes it possible for unauthenticated attackers to bypass Stripe purchase-gated content visibility conditions by forging the 'o_stripe_data' cookie with a target product ID, which is publicly exposed in the checkout block's HTML source.
- Affected versions
-
max 3.1.5.
- Status
-
vulnerable
| Previous vulnerability researches |
|---|
| WPB Image Widget (CVE-2025-58858) , Sep 07, 2025 |
| Image Widget (CVE-2026-42643) , May 01, 2026 |
| Image Widget (CVE-2024-10939) , Dec 15, 2024 |