CVE-2026-4945CWE-639

Otter Blocks <= 3.1.7 - Missing Authorization to Unauthenticated Purchase Verification Bypass

Medium · published September 7, 2026

CVSS v3.1
5.3
EPSS
—
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
Not scored
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-09-07T12:29Z
Timeline
  • 07 SEP 12:29Z
    Otter Blocks <= 3.1.7 - Missing Authorization to Unauthenticated Purchase Verification Bypass
    cvelistv5