Insecure Direct Object Reference in Otter Blocks Plugin for WordPress
CVE-2026-4945

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Otter Blocks – Gutenberg Blocks, Page Builder For Gutenberg Editor & Fse
Vendor
CVE Published:
7 September 2026

What is CVE-2026-4945?

The Otter Blocks plugin for WordPress has a vulnerability that exposes users to Insecure Direct Object Reference in all versions up to 3.1.7. This issue arises from inadequate validation in the 'watch_checkout' function, where attackers can manipulate the product_id parameter in the Stripe checkout URL without proper authorization. As a result, unauthenticated users could exploit this flaw to access premium product entitlements by disguising themselves as purchasers of lower-cost items.

Affected Version(s)

Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE 0 <= 3.1.7

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/otter-blocks/t...
https://plugins.trac.wordpress.org/browser/otter-blocks/t...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dmitrii Ignatyev
.