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CVE-2026-57375— WordPress MStore API plugin <= 4.18.4 - Broken Access Control vulnerability

Quick assessment

Affected
FluxBuilder MStore API
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress MStore API是WordPress基金会的一款MStore API应用网关组件。 WordPress MStore API 4.18.4及之前版本存在授权问题漏洞，该漏洞源于缺失授权验证，可能允许利用错误配置的访问控制安全级别。

CVSS 6.5 · Medium EPSS 0.27% · P17

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
FluxBuilder MStore API ≤ 4.18.4 affected
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I. Basic Information for CVE-2026-57375

Vulnerability Information
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Vulnerability Title
WordPress MStore API plugin <= 4.18.4 - Broken Access Control vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Missing Authorization vulnerability in FluxBuilder MStore API mstore-api allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MStore API: from n/a through <= 4.18.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress MStore API 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress MStore API是WordPress基金会的一款MStore API应用网关组件。 WordPress MStore API 4.18.4及之前版本存在授权问题漏洞，该漏洞源于缺失授权验证，可能允许利用错误配置的访问控制安全级别。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FluxBuilder MStore API 0 ~ 4.18.4 -

II. Public POCs for CVE-2026-57375

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III. Intelligence Information for CVE-2026-57375

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News Coverage for CVE-2026-57375 (1)

IV. Related Vulnerabilities

Same product: MStore API
Same vendor: FluxBuilder
Same weakness: CWE-862

V. Comments for CVE-2026-57375

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