CVE-2026-4945 Otter Blocks <= 3.1.7 - Missing Authorization to Unauthenticated Purchase Verification Bypass
Unauthenticated attackers can bypass purchase verification to obtain premium product entitlements by manipulating product IDs in checkout URLs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4945?
CVE-2026-4945 is a medium-severity missing authorization vulnerability in themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-4945?
How do I fix CVE-2026-4945?
No fix has been published for CVE-2026-4945 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4945 being exploited?
There is no known exploitation of CVE-2026-4945 in the wild and no public exploit code.
Sources
Also known as GHSA-pvh2-45c7-fq5c.