CVE-2026-126423 · Runtime
NO FIX YET · SEE WHAT TO DO
OpenEMR before 8.5.0 reads uncompressed ZIP entries into memory in four upload paths without size or ratio checks. An authenticated billing or care-coordination user can upload a highly compressed archive to exhaust PHP memory and worker pools, making the system unavailable.
first public Oct 28, 2026 · 1 source
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Sites running OpenEMR before 8.5.0 where authenticated users in the billing or Carecoordination roles can upload files. Exposure depends on those roles having upload access; the sources do not say more.
Not affected if no-billing-or-carecoordination-users, openemr-8.5.0-or-later
Who cares healthcare, openemr, php, self-hosted
8.5.0 are in scope.8.5.0 or later, per the advisory.OpenEMR before 8.5.0 contains a denial of service vulnerability in four ZIP upload paths that read uncompressed entries into memory without size or ratio checks. Authenticated billing or Carecoordination users can upload highly compressed ZIP archives to exhaust PHP memory and worker pools, making OpenEMR unavailable.
This page as .md · .json · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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