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Vulnerability record · CVE-2023-2733 · published 25 May 2023

CVE-2023-2733: Inspireui mstore api authentication bypass via alternate path vulnerability

Inspireui · Mstore Api

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.

9.8 CVSS 3.1 Critical EPSS 1.2% · top 31.9% CWE-288 · Authentication bypass via alternate path
9.8CVSS 3.1 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://plugins.trac.wordpress.org/browser/mstore-api/tags/3.9.0/controllers/flutter-woo.php#L734 Patch
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2913397%40mstore-api&old=2910707%40msto Patch
https://www.wordfence.com/threat-intel/vulnerabilities/id/c726d8f0-7f2a-414b-9d73-a053921074d9?source=cve Third Party Advisory
https://plugins.trac.wordpress.org/browser/mstore-api/tags/3.9.0/controllers/flutter-woo.php#L734 Patch
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2913397%40mstore-api&old=2910707%40msto Patch
https://www.wordfence.com/threat-intel/vulnerabilities/id/c726d8f0-7f2a-414b-9d73-a053921074d9?source=cve Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-2733), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.