CVE-2026-27543
WordPress MStore API plugin <= 4.20.0 - Privilege Escalation vulnerability
Unauthenticated Privilege Escalation in MStore API <= 4.20.0 versions.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
WordPress MStore API plugin <= 4.20.0 - Privilege Escalation vulnerability
Unauthenticated Privilege Escalation in MStore API <= 4.20.0 versions.
- Record
CVE-2026-27543- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-266
- Updated
- 2026-11-02
EUVDEUVD-2026-57938
Unauthenticated Privilege Escalation in MStore API <= 4.20.0 versions.
- Record
EUVD-2026-57938- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-cvhf-m4qh-hf7x
Unauthenticated Privilege Escalation in MStore API <= 4.20.0 versions.
Unauthenticated Privilege Escalation in MStore API <= 4.20.0 versions.
- Record
GHSA-cvhf-m4qh-hf7x- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-266
- Updated
- 2026-11-02
NVD
Unauthenticated Privilege Escalation in MStore API <= 4.20.0 versions.
- Record
CVE-2026-27543- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-266
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-27543 is a high vulnerability (CVSS 8.1) in Fluxbuilder Mstore Api, published August 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. No source names a fixed version.