1. Home
  2. CVE Database
  3. CVE-2026-86934
CRITICAL · 9.1

CVE-2026-86934

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 setti...

Vulnerability Description

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.

CVSS Score

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
ClarisFilemaker Server< 26.0.3

Related Weaknesses (CWE)

CWE-639

References

FAQ

What is CVE-2026-86934?

CVE-2026-86934 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 setti...

How severe is CVE-2026-86934?

CVE-2026-86934 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-86934?

Check the references section above for vendor advisories and patch information. Affected products include: Claris Filemaker Server.