Is CVE-2026-54817 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-54817 being exploited in the wild.

How severe is CVE-2026-54817?

Medium severity, with a CVSS score of 6.5, published 17 June 2026.

Which products and versions are affected?

InspireUI MStore API up to 4.18.4.

Is there a fix for CVE-2026-54817?

A patch was published on 2026-06-17: Patch released in version 4.19.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-54817 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-54817?

Check whether you run InspireUI MStore API at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-54817: FluxBuilder MStore API authentication bypass in password recovery

CVE-2026-54817 · Severity: medium · CVSS 6.5 · Published 2026-06-17

The FluxBuilder MStore API plugin for WordPress, which is used to connect mobile apps to e-commerce stores, contains a security flaw in its authentication process. An unauthorized attacker can bypass security checks during the password recovery process, potentially allowing them to gain unauthorized access to user accounts. This could lead to the compromise of customer data or administrative control over the website.

Technologies: InspireUI MStore API. Vendors: InspireUI.

Quick answers

Is CVE-2026-54817 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-54817 being exploited in the wild.
How severe is CVE-2026-54817?: Medium severity, with a CVSS score of 6.5, published 17 June 2026.
Which products and versions are affected?: InspireUI MStore API up to 4.18.4.
Is there a fix for CVE-2026-54817?: A patch was published on 2026-06-17: Patch released in version 4.19.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-54817 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-54817?: Check whether you run InspireUI MStore API at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An authentication bypass vulnerability (CWE-288) exists in the FluxBuilder MStore API plugin for WordPress through version 4.18.4. The flaw resides in the password recovery mechanism, where the application fails to properly validate authentication through the intended primary channel, allowing an alternate path to be exploited. A remote, unauthenticated attacker can leverage this to bypass security controls and potentially gain access to higher-privileged accounts. The issue is addressed in version 4.19.0.

Affected products

FluxBuilder MStore API up to 4.18.4

Timeline

2026-04-14: other: Vulnerability reported by researcher Jakub Herman
2026-06-17: advisory: Advisory published by Patchstack and NVD record created
2026-06-17: patched: Patch released in version 4.19.0

References

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