CVE-2026-109937
Medium
Description
The Otter Blocks WordPress plugin before 3.2.3 does not validate that a user-supplied return URL belongs to the site before using it to build the return destination of a Stripe Checkout session, allowing unauthenticated attackers to redirect victims who complete or cancel checkout to an arbitrary external URL.
SeverityMedium
CVSS5.4
Exploit probability—
Product
Otter Blocks
PublishedOct 18, 2026
First seenOct 18, 2026
Weakness typeCWE-601Open redirect
How to fix
Update
- Otter Blocks3.2.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Otter Blocks | v < 3.2.3 | 3.2.3 |
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