CVE-2023-2733
CWE-288Published: May 25, 2023· Updated: Jun 17, 2026
Official Description
The MStore API plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 3.9.0. This is due to insufficient verification on the user being supplied during the coupon redemption REST API request through the plugin. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id.
Risk Analysis
The MStore API plugin for WordPress fails to properly verify users during coupon redemption, allowing unauthenticated attackers to log in as any user, including administrators. This critical vulnerability provides a direct path to full site takeover.
No public exploit is known, and it is not tracked in the CISA KEV. The vulnerability is remotely exploitable.
Update the MStore API plugin to a version beyond 3.9.0 to ensure proper authentication checks are enforced.
Technical Analysis
CVE-2023-2733 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (6)
Quick Facts
Related CVEs (CWE-288)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-2733 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts