CVE-2026-81427

WC Vendors – WooCommerce Multivendor, WooCommerce Marketplace, Product Vendors < 2.7.2.1 - Authenticated (Custom Role+) Insecure Direct Object Reference

2026-09-02 00:00
Bhaveshkumar Parmar

Strategic Overview

Status
Patched in 2.7.2.1
Affected Plugin
WC Vendors – WooCommerce Multivendor, WooCommerce Marketplace, Product Vendors
Affected Version
< 2.7.2.1
CVSS
4.3Medium
Weakness type
CWE-639 · Authorization Bypass Through User-Controlled Key
CVE
CVE-2026-81427
View all WC Vendors – WooCommerce Multivendor, WooCommerce Marketplace, Product Vendors vulnerabilities

At a glance

CVE-2026-81427 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the WC Vendors WordPress plugin, affecting versions < 2.7.2.1. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Custom Role level or above. The issue is fixed in version 2.7.2.1; sites on affected versions should update now. Disclosed September 2026, reported by Bhaveshkumar Parmar.

Vulnerability Overview

The WC Vendors – WooCommerce Multivendor, WooCommerce Marketplace, Product Vendors plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to 2.7.2.1. This is due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with custom role-level access and above, to perform an unauthorized action.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-639: Authorization Bypass Through User-Controlled Key

Reaching this weakness in WC Vendors < 2.7.2.1 takes an account at Custom Role level or above. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.

Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For WC Vendors the fix is 2.7.2.1: builds < 2.7.2.1 are affected, anything from 2.7.2.1 onward is not.

Remediation

Update to version 2.7.2.1, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: WC Vendors 2.7.2.1 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-81427https://www.wordfence.com/threat-intel/vulnerabilities/id/00649f4e-30fe-4343-b7d9-44fb41aa2e47https://nvd.nist.gov/vuln/detail/CVE-2026-81427

Related records

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