{"id":"CVE-2026-124490","published":"2026-11-08T14:18:18.667","lastModified":"2026-11-10T21:46:31.613","description":"OpenEMR before 8.3.0 contains a path traversal vulnerability in the RingCentral RCFaxClient disposeDocument() method of oe-module-faxsms that allows authenticated attackers to read and write arbitrary files via the file_path parameter. Attackers can use action=download to read credentials and source code, or action=setup with base64 content to write web-executable files for code execution.","cvssScore":9.1,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cwes":["CWE-73"],"vendors":[],"products":[],"references":[{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-38jw-pwgq-9hpj","tags":[]},{"url":"https://www.vulncheck.com/advisories/openemr-before-8.3.0-arbitrary-file-read-write-via-oe-module-faxsms-disposedocument","tags":[]}],"exploitRefs":[{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-38jw-pwgq-9hpj","tags":[]}],"hasPoc":true,"ai":{"summary":"OpenEMR before 8.3.0 contains a path traversal flaw in the RingCentral RCFaxClient module's disposeDocument() method, allowing authenticated attackers to read or write arbitrary files via the file_path parameter. This enables credential theft and remote code execution by writing web-accessible malicious files.","exploitability":"Exploitation requires valid authentication and manipulation of the file_path parameter in requests to the faxsms module's download or setup endpoints.","blast_radius":"Successful exploitation could lead to full system compromise, including credential theft, persistent backdoor installation, and complete compromise of the OpenEMR application and underlying server.","remediation":"Upgrade to OpenEMR version 8.3.0 or later, which patches this path traversal vulnerability in the oe-module-faxsms component.","detection":"Defenders should monitor web server access logs for requests to /interface/modules/faxsms/ endpoints with suspicious file_path parameters containing directory traversal sequences (e.g., ../) or base64-encoded content in action=setup requests, especially when combined with non-standard file extensions or paths outside expected document roots.","tags":["path-traversal","auth-bypass","web","rce","credential-theft"],"model":"garnet-coder","analyzedAt":"2026-11-09T09:45:03.885Z"}}