CVE-2026-57375

WordPress MStore API plugin <= 4.18.4 - Broken Access Control vulnerability

Published Jul 13, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Description

Missing Authorization vulnerability in FluxBuilder MStore API mstore-api allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MStore API: from n/a through <= 4.18.4.

Analysis

Technical impact

A missing authorization check in FluxBuilder MStore allows attackers to exploit incorrectly configured access control security levels, potentially accessing or modifying sensitive data and configuration without proper permission. This flaw is a CWE-862 Missing Authorization weakness.

Affected Systems

WordPress sites running FluxBuilder MStore API plugin version 4.18.4 or earlier are affected. Any site that has the plugin installed and enabled is at risk.

Risk and Exploitability

The CVSS score of 6.5 indicates moderate severity. The EPSS score of < 1% suggests a very low likelihood of exploitation in the near term, and the vulnerability is not listed in CISA KEV. The likely attack vector is inferred from the description; attackers would likely exploit this via web requests to the vulnerable plugin endpoints, bypassing expected authentication controls.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

FluxBuilder

MStore API

unaffected

Version	Status	Constraints
`0`	affected	≤ 4.18.4

No data.

Vendor Product Versions

Fluxbuilder

Mstore Api

Version	Status	Scheme	Platform
`[0,4.18.4]`	affected	semver	—
`[4.19.0,*]`	unaffected	semver	—

Wordpress

Version	Status	Scheme	Platform
`—`	unaffected	—	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade the MStore API plugin to the latest available version that removes the missing authorization flaw.
Verify that all plugin endpoints enforce proper authentication and authorization checks before processing requests.
If an immediate update is not possible, limit plugin usage to authenticated administrators only or block external access to the affected endpoints.

Generated by OpenCVE AI on July 31, 2026 at 12:09 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.266% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://patchstack.com/database/Wordpress/Plugin/mstore-api/vulnerability/wordpress-mstore-api-plugin-4-18-4-broken-access-control-vulnerability?_s_id=cve

History

Jul 13, 2026 2:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Jul 13, 2026 1:00 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Fluxbuilder Fluxbuilder mstore Api Wordpress Wordpress wordpress
Vendors & Products		Fluxbuilder Fluxbuilder mstore Api Wordpress Wordpress wordpress

Jul 13, 2026 10:00 AM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		Missing Authorization vulnerability in FluxBuilder MStore API mstore-api allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MStore API: from n/a through <= 4.18.4.
Title		WordPress MStore API plugin <= 4.18.4 - Broken Access Control vulnerability
Weaknesses		CWE-862
References		https://patchstack.com/database/Wordpress/Plugin/mstore-api/vulnerability/wordpress-mstore-api-plugin-4-18-4-broken-access-control-vulnerability?_s_id=cve
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}`