CVE-2026-16990
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductPayment Button for PayPal
PublishedAug 12, 2026
First seenAug 12, 2026
Weakness typeCWE-602CWE-602
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Payment Button for PayPal | v ≤ 1.2.3.44 | — |
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