Strix
26.1K

CVE-2026-16990

MEDIUMCVSS 5.3/10

Last modified

CVE-2026-16990 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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..

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.

Metrics

CVSS 3.1
5.3/10

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

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
UnknownPayment Button for PayPal<= 1.2.3.44

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-16990?
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.
How severe is CVE-2026-16990?
CVE-2026-16990 has a CVSS score of 5.3/10 (MEDIUM severity).
How do I fix CVE-2026-16990?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-16990?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST