Vulnerability · Published Aug 12, 2026 · Assigned by WPScan
CVE-2026-16990Payment Button for PayPal <= 1.2.3.44 - Unauthenticated Payment Price Manipulation
Medium 5.3
In plain English
A medium-severity security flaw in Payment Button for PayPal from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 74.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Payment Button for PayPal | 0 – through 1.2.3.44 |
References
- https://wpscan.com/vulnerability/97c08603-c407-43b2-ab2c-e39f85e89ebe/ exploit, vdb-entry, technical-description