Read the docs
TI-2026-39620 Aliases CVE-2026-54817GHSA-vfmj-48r5-54j4

WordPress MStore API plugin <= 4.18.4 - Broken Authentication vulnerability

Priority LOW 34CWE-288Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-288.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00253 16th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FluxBuilderMStore APIup to 4.18.4—No fix listedCNA
  • MStore API VendorFluxBuilder Affected up to 4.18.4 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54817
  2. 2026-10-03 Alias added: GHSA-vfmj-48r5-54j4

References

Other 1

  • TI-2024-36383 WordPress ListApp Mobile Manager plugin <= 1.7.7 - Account Takeover vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-21937 WordPress MStore API plugin <= 4.20.0 - Privilege Escalation vulnerability CVSS 3.1HIGH 8.1
  • TI-2026-41312 WordPress MStore API plugin <= 4.18.4 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences