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 setting and access the XML Web Publishing interface. in Claris FileMaker Server
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.
AI Analysis
Technical Summary
An authorization bypass vulnerability exists in the FileMaker Server Web Publishing Engine where requests containing an extended privilege header can circumvent the disabled Custom Web Publishing with XML setting. This allows unauthorized access to the XML Web Publishing interface. The issue is resolved in FileMaker Server version 26.0.3.
Potential Impact
An attacker can bypass authorization controls intended to disable Custom Web Publishing with XML, potentially gaining unauthorized access to the XML Web Publishing interface. This could lead to unauthorized data access or manipulation via the XML interface.
Mitigation Recommendations
Upgrade FileMaker Server to version 26.0.3 or later, where this vulnerability is addressed. No other mitigations are specified.
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 setting and access the XML Web Publishing interface. in Claris FileMaker Server
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.
Affected software
Claris
FileMaker Server
pkg:github/claris/filemaker-serverRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An authorization bypass vulnerability exists in the FileMaker Server Web Publishing Engine where requests containing an extended privilege header can circumvent the disabled Custom Web Publishing with XML setting. This allows unauthorized access to the XML Web Publishing interface. The issue is resolved in FileMaker Server version 26.0.3.
Potential Impact
An attacker can bypass authorization controls intended to disable Custom Web Publishing with XML, potentially gaining unauthorized access to the XML Web Publishing interface. This could lead to unauthorized data access or manipulation via the XML interface.
Mitigation Recommendations
Upgrade FileMaker Server to version 26.0.3 or later, where this vulnerability is addressed. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-09-08T16:43:41.879Z
- State
- PUBLISHED
Threat ID: 6ab40d59f7a7c541061aeba7
Added to database: 09/23/2026, 17:33:13 UTC
Last enriched: 09/23/2026, 17:47:42 UTC
Last updated: 09/24/2026, 03:06:25 UTC
Views: 11
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