CriticalCritical vulnerability

CVE-2026-86934 (CVSS 9.1)

NVD · officialPublished Sep 23, 2026Risk 50/100EPSS 0.1%

An authorization bypass vulnerability in the FileMaker Server Web Publishing Engine allowed requests containing an extended privilege header to bypass the disabled Custom Web Publishing with XML setting and access the XML Web Publishing interface. This vulnerability is addressed in FileMaker Server version 26.0.3.

Technical details

CVSS

9.1

AV:NetworkAC:LowPR:NoneUI:NoneC:HighI:HighA:None

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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