Checkout Mestres WP <= 7.1.9.6 - Missing Authorization to Unauthenticated Arbitrary Options Update
Strategic Overview
- Status
- Patched in 7.1.9.8
- Affected Plugin
- Checkout Mestres do WP for WooCommerce
- Affected Version
<= 7.1.9.6- CVSS
- 9.8Critical
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2023-51471
At a glance
CVE-2023-51471 is a critical-severity Missing Authorization vulnerability in the Checkout Mestres do WP for WooCommerce WordPress plugin, affecting versions <= 7.1.9.6. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 7.1.9.8; sites on affected versions should update now. Disclosed December 2023, reported by Rafie Muhammad.
Vulnerability Overview
The Checkout Mestres WP plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in all versions up to, and including, 7.1.9.6. This makes it possible for unauthenticated attackers to update arbitrary site options.
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 privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-862: Missing Authorization
Reaching this weakness in Checkout Mestres do WP for WooCommerce <= 7.1.9.6 takes no account at all. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Checkout Mestres do WP for WooCommerce the fix is 7.1.9.8: builds <= 7.1.9.6 are affected, anything from 7.1.9.8 onward is not.
Remediation
Update to version 7.1.9.8, or a newer patched version
How does WordSec protect against this?
This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Checkout Mestres do WP for WooCommerce 7.1.9.8 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in Checkout Mestres do WP for WooCommerce
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