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Medium 5.3Published Aug 12, 2026

CVE-2026-16990Payment Button for PayPal <= 1.2.3.44 - Unauthenticated Payment Price Manipulation

Updated under an hour ago ()

Does this affect you?

It affects Unknown Payment Button for PayPal. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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
5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE)
CWE-602
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
WPScan
NVD analysis
Deferred
Record last updated
Aug 12, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Unknown Payment Button for PayPal
unknown:payment_button_for_paypal (from the name)
through 1.2.3.44
CNA record

References

  • exploit, vdb-entry, technical-description

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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