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CVE-2026-54817— WordPress MStore API plugin <= 4.18.4 - Broken Authentication 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.

inspireui mstore api是inspireui个人开发者的一个移动商城API。 FluxBuilder MStore API 4.18.4及之前版本存在安全漏洞，该漏洞源于存在备用路径或通道绕过身份验证，可能导致密码恢复利用。

CVSS 6.5 · Medium EPSS 0.46% · P37

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
FluxBuilder MStore API n/a≤ 4.18.4 affected
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I. Basic Information for CVE-2026-54817

Vulnerability Information
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Vulnerability Title
WordPress MStore API plugin <= 4.18.4 - Broken Authentication vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Authentication Bypass Using an Alternate Path or Channel vulnerability in FluxBuilder MStore API allows Password Recovery Exploitation. 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:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
FluxBuilder MStore API 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
inspireui mstore api是inspireui个人开发者的一个移动商城API。 FluxBuilder MStore API 4.18.4及之前版本存在安全漏洞，该漏洞源于存在备用路径或通道绕过身份验证，可能导致密码恢复利用。
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 n/a ~ 4.18.4 -

II. Public POCs for CVE-2026-54817

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III. Intelligence Information for CVE-2026-54817

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News Coverage for CVE-2026-54817 (1)

IV. Related Vulnerabilities

Same product: MStore API
Same vendor: FluxBuilder
Same weakness: CWE-288

V. Comments for CVE-2026-54817

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