CVE-2026-16990 — MEDIUM (5.3)

Vulnerability 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.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

References

https://wpscan.com/vulnerability/97c08603-c407-43b2-ab2c-e39f85e89ebe/

FAQ

What is CVE-2026-16990?

CVE-2026-16990 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 attacke...

How severe is CVE-2026-16990?

CVE-2026-16990 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-16990?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.