Is CVE-2026-109937 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-109937?

CVE-2026-109937 has a CVSS v3 severity of MEDIUM (5.4).

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CVE-2026-109937

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.