CVE-2026-27543— WordPress MStore API plugin <= 4.20.0 - Privilege Escalation vulnerability
Possible ATT&CK Techniques 1AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| FluxBuilder | MStore API | n/a≤ 4.20.0 | affected |
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I. Basic Information for CVE-2026-27543
Vulnerability Information
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Vulnerability Title
WordPress MStore API plugin <= 4.20.0 - Privilege Escalation vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated Privilege Escalation in MStore API <= 4.20.0 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress MStore API 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FluxBuilder MStore API是FluxBuilder公司的一款提供电商系统API接口的服务软件。 WordPress MStore API 4.20.0及之前版本存在权限许可和访问控制问题漏洞，该漏洞源于未经验证的权限提升。
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 ~ 4.20.0 | - |
II. Public POCs for CVE-2026-27543
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-27543 (1)
IV. Related Vulnerabilities
Same product: MStore API
- CVE-2026-16041
MStore API < 4.21.0 - Unauthenticated Product Review Creatio - CVE-2026-16039
MStore API < 4.21.0 - Subscriber+ Order and Customer PII Dis - CVE-2026-16038
MStore API < 4.21.0 - Unauthenticated Payment Bypass via Mul - CVE-2026-16030
MStore API < 4.21.0 - Unauthenticated Account Takeover via F - CVE-2026-57375
WordPress MStore API plugin <= 4.18.4 - Broken Access Contro
Same weakness: CWE-266
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Models-as-a-service: red hat openshift ai: maas-api and maas - CVE-2026-72826
Grav before 1.0.13 Scope Bypass via createApiKey
V. Comments for CVE-2026-27543
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