WordPress MStore API plugin <= 4.20.0 - Privilege Escalation vulnerability
Priority LOW 37CWE-266Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-266.
Summary
Unauthenticated Privilege Escalation in MStore API <= 4.20.0 versions.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00373 31st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| FluxBuilder | MStore API | up to 4.20.0 | — | No fix listed | CNA |
- MStore API VendorFluxBuilder Affected up to 4.20.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-27543
- 2026-10-03 Alias added: GHSA-cvhf-m4qh-hf7x
References
More FluxBuilder vulnerabilities
- TI-2024-36383 WordPress ListApp Mobile Manager plugin <= 1.7.7 - Account Takeover vulnerability CVSS 3.1CRITICAL 9.8
- TI-2026-41312 WordPress MStore API plugin <= 4.18.4 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5
- TI-2026-39620 WordPress MStore API plugin <= 4.18.4 - Broken Authentication vulnerability CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-27543 · CVE Program
- CVE-2026-27543 · NVD
- FIRST EPSS
- GHSA-cvhf-m4qh-hf7x · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences