Path Traversal in Openemr
CVE-2026-124467
OpenEMR before 8.4.0 contains a local file inclusion in the ESign router (library/ESign/Router.php), which passes the unsanitized module parameter into a require_once of '<module>/Controller.php', and the fax module's faxProcessUploads writes attacker-named files to a predictable temp path without extension checks. Authenticated attackers can upload a PHP file named Controller.php, then request interface/esign/index.php with a traversing module parameter to include it and execute arbitrary code.
Vulnerability class: Path Traversal (Directory Traversal)
Published .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-p4v7-crwp-qq7q) (vendor-advisory)
- VulnCheck Advisory: OpenEMR before 8.4.0 Remote Code Execution via ESign LFI and fax upload (third-party-advisory)
Frequently asked questions
- What is CVE-2026-124467?
- CVE-2026-124467 is a high-severity vulnerability in Openemr, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-11-08.
- How severe is CVE-2026-124467?
- High severity. CVSS v3 base score is 8.8 out of 10.