Vulnerability Report

CVE-2026-5050

Title: Improper Verification of Cryptographic Signature in Redsys & WooCommerce Lite

Arbitrary File Access

Proof Of Concept

PoC Available for CVE-2026-5050

CWE Category CWE-347

Published Date Apr 16, 2026

Modified Date Apr 22, 2026

Exploit Status Available

Score 7.5 CVSS v3.1

Exploit Probability (EPSS)

0.21%

Vulnerability Summary

CVE-2026-5050: 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.

Impacted Vendors

Analysis in Progress...

Reference Links

https://plugins.trac.wordpress.org/changeset/3501998/woo-redsys-gateway-light https://www.wordfence.com/threat-intel/vulnerabilities/id/80544889-8efc-4aa0-a690-774b1ee6a1a0?source=cve

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-5050 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/George0Papasotiriou/CVE-2026-5050-Blind-LDAP-Injection-via-Unescaped-Filter

View Code

April 22, 2026 MODIFIED

Vulnerability data updated via NVD.

April 22, 2026 MODIFIED

Vulnerability data updated via NVD.

April 16, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.