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Description

The Payment Gateway for Redsys & WooCommerce Lite plugin for WordPress is vulnerable to Improper Verification of Cryptographic Signature in versions up to, and including, 7.0.0 due to successful_request() handlers calculating a local signature but not validating Ds_Signature from the request before accepting payment status across the Redsys, Bizum, and Google Pay gateway flows. This makes it possible for unauthenticated attackers to forge payment callback data and mark pending orders as paid when they know a valid order key and order amount, potentially allowing checkout completion and product or service fulfillment without a successful payment.

PUBLISHED Reserved 2026-03-27 | Published 2026-04-16 | Updated 2026-04-16 | Assigner Wordfence




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Problem types

CWE-347 Improper Verification of Cryptographic Signature

Product status

Default status
unaffected

Any version
affected

Timeline

2026-03-27:Vendor Notified
2026-04-15:Disclosed

Credits

Nguyen Ngoc Duc finder

References

www.wordfence.com/...-8efc-4aa0-a690-774b1ee6a1a0?source=cve

plugins.trac.wordpress.org/...01998/woo-redsys-gateway-light

cve.org (CVE-2026-5050)

nvd.nist.gov (CVE-2026-5050)

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