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Medium 5.3Published Oct 26, 2026

CVE-2026-103319OPay Payment Gateway for WooCommerce <= 2.5.5 - Unauthenticated Payment Confirmation Forgery via Empty Default Secret Key

Updated under an hour ago ()

Does this affect you?

It affects Unknown OPay Payment Gateway for WooCommerce. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

The OPay Payment Gateway for WooCommerce WordPress plugin through 2.5.5 does not properly verify that payment notifications originate from the payment provider, as the secret used to validate their signature is empty by default, allowing unauthenticated attackers to forge a valid notification and mark arbitrary orders as paid, cancelled or failed.

CVSS
5.3 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE)
CWE-287
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
Oct 26, 2026
First seen by InfoSec Signals
Oct 26, 2026

Affected products

Affected products
Unknown OPay Payment Gateway for WooCommerce
unknown:opay_payment_gateway_for_woocommerce (from the name)
through 2.5.5
CNA record

References

References

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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