Quick answers
- Is CVE-2026-124490 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-124490 being exploited in the wild.
- How severe is CVE-2026-124490?
- Critical severity, with a CVSS score of 9.1, published 8 November 2026.
- Which products and versions are affected?
- OpenEMR before 8.3.0.
- Is there a fix for CVE-2026-124490?
- Yes: fixed in 8.3.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-124490 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-124490?
- Check whether you run OpenEMR at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 8.3.0
Technical details
The RCFaxClient disposeDocument() method in oe-module-faxsms fails to validate the file_path parameter, allowing path traversal attacks. Authenticated attackers can exploit action=download to read arbitrary files via readfile(), or action=setup to write arbitrary files via file_put_contents() using base64-encoded content. The method lacks both path restrictions and proper authorization checks despite a sibling method having been previously hardened.
Affected products
- OpenEMR OpenEMR before 8.3.0
Timeline
- 2026-08-18: disclosed
- 2026-11-08: advisory