CVE-2026-4945
Otter Blocks <= 3.1.7 - Missing Authorization to Unauthenticated Purchase Verification Bypass
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
The Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.1.7 via the 'watch_checkout' function due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to pay for a lower-cost product while obtaining entitlement for a premium product by manipulating the product_id parameter independently of the price_id parameter in the Stripe checkout URL.
| CWE | CWE-639 |
| Vendor | themeisle |
| Product | otter blocks – gutenberg blocks, page builder for gutenberg editor & fse |
| Published | Sep 7, 2026 |
| Last Updated | Sep 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
themeisle / Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE
0 ≤ 3.1.7
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/7ecb9f61-68d5-4c70-8d7d-e4fb067fcff9?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/render/class-stripe-checkout-block.php#L69 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php#L234 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php#L304 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3496611/
Credits
Dmitrii Ignatyev