CVE-2026-4945

Medium

Description

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.

SeverityMedium
CVSS5.3
Exploit probability—
ProductOtter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE
PublishedSep 7, 2026
First seenSep 7, 2026

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSEv ≤ 3.1.7—

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