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CVE-2026-61954 – Unauthenticated Broken Access Control in PayU CommercePro Plugin (WordPress) <= …

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Summary

CVE-2026-61954 is a high-severity Unauthenticated Broken Access Control vulnerability (CWE-862: Missing Authorization) affecting the PayU CommercePro Plugin for WordPress in all versions up to and including 3.8.9. The flaw allows a remote, unauthenticated attacker to invoke a privileged function without any authorization check, enabling manipulation of WooCommerce order prices on affected e-commerce sites. The vulnerability carries a CVSS v3.1 base score of 7.5 (HIGH) and was patched in version 3.9.0, released July 8, 2026.

Technical details

  • Root cause: A missing authorization, authentication, and nonce token check on a sensitive plugin function exposes it to invocation by any unauthenticated HTTP client.
  • Trigger conditions: No authentication, privileges, or user interaction are required. The vulnerability is exploitable over the network with low attack complexity.
  • Attack vector: Remote network exploitation via HTTP/HTTPS requests to the WordPress installation. No prior account or session is needed.
  • Impact: An unauthenticated attacker can manipulate WooCommerce order prices — bypassing the expected payment integrity controls of the payment gateway. This can result in fraudulent underpayment for orders processed through the plugin on affected WooCommerce stores.

Affected software

  • PayU CommercePro Plugin (PayU India) for WordPress — all versions <= 3.8.9

Severity

  • CVSS v3.1 Base Score: 7.5 (HIGH)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Mitigation and recommended actions

  • Immediate action — update: Upgrade the PayU CommercePro Plugin to version 3.9.0 or later, which contains the vendor’s fix for this vulnerability. The patched version is available directly from the WordPress Plugin Directory.
  • Verify installed version: In the WordPress admin panel, navigate to Plugins and confirm the installed version of "PayU CommercePro Plugin" is 3.9.0 or above.
  • If immediate patching is not possible: Restrict network access to the WordPress admin and checkout endpoints at the WAF or perimeter level, and monitor WooCommerce order logs for anomalous price changes or order modifications.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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