Is CVE-2026-16990 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-16990?

CVE-2026-16990 has a CVSS v3 severity of MEDIUM (5.3).

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CVE-2026-16990

Description

The Payment Button for PayPal WordPress plugin through 1.2.3.44 does not enforce the merchant-configured price server-side and trusts a client-supplied payment amount, allowing unauthenticated attackers to create a real PayPal order against the merchant for an arbitrary lower amount.