CVE-2026-54817

WordPress MStore API plugin <= 4.18.4 - Broken Authentication vulnerability

MEDIUM

6.5

CVSS Score

Published: June 17, 2026 at 01:36 PM UTC

Updated: October 26, 2026 at 12:10 PM UTC

1 product affected across 1 vendorMStore API

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

Authentication Bypass Using an Alternate Path or Channel vulnerability in FluxBuilder MStore API allows Password Recovery Exploitation. This issue affects MStore API: from n/a through 4.18.4.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

MStore API · Fluxbuilderwordpress-plugin

90%

v ≤ 4.18.4

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

VDB Entry

Source: cverecord

https://patchstack.com/database/wordpress/plugin/mstore-api/vulnerability/wordpress-mstore-api-plugin-4-18-4-broken-authentication-vulnerability?_s_id=cve

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMPatchstack

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: LOW
Availability: LOW

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-288

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