CVE-2026-54817 WordPress MStore API plugin <= 4.18.4 - Broken Authentication vulnerability
Attackers can bypass authentication via password recovery flaws in the MStore API plugin, leading to unauthorized account access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54817?
CVE-2026-54817 is a medium-severity authentication bypass vulnerability in FluxBuilder MStore API, published on 17 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-288
Which versions are affected by CVE-2026-54817?
How do I fix CVE-2026-54817?
No fix has been published for CVE-2026-54817 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-54817 being exploited?
There is no known exploitation of CVE-2026-54817 in the wild and no public exploit code.
Sources
Also known as GHSA-vfmj-48r5-54j4.