Paper/Archive/CVE-2026-86934

CVE-2026-86934

Claris FileMaker Server — An authorization bypass vulnerability in the FileMaker Server Web Publishing Engine allowed requests containing an extended privilege hea…

EPSS 0.3%CVSS 9.1

critical.is priorityof 100

CVSS 9.1 (ADP)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 24.5.245 × 204.9 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

FileMaker Server< 26.0.326.0.3CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refsupport.claris.com/s/answerview?anum=000049217&language=en_US