Vulnerability · Published Jun 17, 2026 · Assigned by Patchstack
CVE-2026-54817WordPress MStore API plugin <= 4.18.4 - Broken Authentication vulnerability
Medium 6.5
In plain English
A medium-severity authentication bypass in MStore API from FluxBuilder. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 83.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| FluxBuilder | MStore API | n/a – through 4.18.4 |
Weakness: CWE-288 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L