Vulnerabilities

CVE-2026-27543 | BDVDB-2026-358762 Detail

FluxBuilderMStore API

Description#

Unauthenticated Privilege Escalation in MStore API <= 4.20.0 versions.

Impact#

CAPEC-233 Privilege Escalation

Weaknesses#

CWE-266 Incorrect Privilege Assignment

References#

https://patchstack.com/database/wordpress/plugin/mstore-api/vulnerability/wordpress-mstore-api-plugin-4-20-0-privilege-escalation-vulnerability?_s_id=cve

Exploit#

No public exploit known

History#

Version 12026-08-13Record published in the CVE List.

Published

Published: 2026-08-13
Last modified: 2026-08-13

Vendor information

Vendor: FluxBuilder
Product: MStore API

All FluxBuilder vulnerabilities

Score

8.1 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 31.6.

KEV

No

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
<= 4.20.0
Fixed
Not stated
Vulnerable
Not stated
Fixed
4.21.0

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.1 High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).