CVE-2026-2892

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.

PUBLISHED Reserved 2026-02-20 | Published 2026-04-30 | Updated 2026-04-30 | Assigner Wordfence

Problem types

CWE-285 Improper Authorization

Product status

Timeline

Credits

Drew Webber finder

References

www.wordfence.com/...-1f94-4e0b-8906-1a9b9602a746?source=cve

plugins.trac.wordpress.org/...c/plugins/class-stripe-api.php

plugins.trac.wordpress.org/...c/plugins/class-stripe-api.php

plugins.trac.wordpress.org/...ins/class-block-conditions.php

plugins.trac.wordpress.org/changeset/3471326/

cve.org (CVE-2026-2892)

nvd.nist.gov (CVE-2026-2892)

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