Missing Authorization in OpenEMR - CVE-2026-33918
Published: April 23, 2026
Vulnerability identifier: #VU127357
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-33918
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenEMR
Affected software:
OpenEMR
OpenEMR
Detailed vulnerability description
The vulnerability allows a remote user to download sensitive claim batch files and permanently delete them.
The vulnerability exists due to missing authorization in interface/billing/get_claim_file.php when handling direct requests to the claim file download endpoint. A remote user can send a crafted request to download sensitive claim batch files and permanently delete them.
Claim batch filenames follow a predictable timestamp pattern, which makes enumeration straightforward.
How to mitigate CVE-2026-33918
Install security update from vendor's website.