CVE-2026-16041: CWE-862 Missing Authorization in MStore API
The MStore API WordPress plugin before version 4.21.0 contains a missing authorization vulnerability in its REST product-review creation endpoint. This flaw allows unauthenticated attackers to submit WooCommerce product reviews with arbitrary reviewer names, emails, and star ratings, even on stores configured to accept reviews only from verified owners. The vulnerability is identified as CWE-862 (Missing Authorization) and has a high severity rating with a CVSS score of 7.5.
AI Analysis
Technical Summary
CVE-2026-16041 is a missing authorization vulnerability in the MStore API WordPress plugin prior to version 4.21.0. The plugin fails to perform authorization or purchase-ownership verification on its REST API route for creating product reviews. As a result, unauthenticated attackers can create product reviews with attacker-chosen reviewer details and star ratings on WooCommerce stores that restrict reviews to verified purchasers. This could lead to manipulation of product reputation and user trust.
Potential Impact
The vulnerability allows unauthenticated attackers to inject fraudulent product reviews, potentially damaging the integrity of product ratings and misleading customers. There is no impact on confidentiality or availability reported, but the integrity of review data is compromised.
Mitigation Recommendations
No official patch or remediation guidance is currently available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, store administrators should consider disabling the vulnerable review creation endpoint or implementing additional access controls at the web server or application firewall level to restrict unauthorized review submissions.
CVE-2026-16041: CWE-862 Missing Authorization in MStore API
Description
The MStore API WordPress plugin before version 4.21.0 contains a missing authorization vulnerability in its REST product-review creation endpoint. This flaw allows unauthenticated attackers to submit WooCommerce product reviews with arbitrary reviewer names, emails, and star ratings, even on stores configured to accept reviews only from verified owners. The vulnerability is identified as CWE-862 (Missing Authorization) and has a high severity rating with a CVSS score of 7.5.
CVSS v3.1
Score 7.5high
Affected software
MStore API
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16041 is a missing authorization vulnerability in the MStore API WordPress plugin prior to version 4.21.0. The plugin fails to perform authorization or purchase-ownership verification on its REST API route for creating product reviews. As a result, unauthenticated attackers can create product reviews with attacker-chosen reviewer details and star ratings on WooCommerce stores that restrict reviews to verified purchasers. This could lead to manipulation of product reputation and user trust.
Potential Impact
The vulnerability allows unauthenticated attackers to inject fraudulent product reviews, potentially damaging the integrity of product ratings and misleading customers. There is no impact on confidentiality or availability reported, but the integrity of review data is compromised.
Mitigation Recommendations
No official patch or remediation guidance is currently available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, store administrators should consider disabling the vulnerable review creation endpoint or implementing additional access controls at the web server or application firewall level to restrict unauthorized review submissions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-07-17T09:21:01.355Z
- State
- PUBLISHED
Threat ID: 6a757731bf8831d539df5eb3
Added to database: 08/07/2026, 06:12:01 UTC
Last enriched: 08/14/2026, 15:56:40 UTC
Last updated: 09/21/2026, 22:01:32 UTC
Views: 59
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