{"affected":[{"product":"openemr","source":"CNA: GitHub_M","vendor":"openemr","versions":[{"status":"affected","version":"< 8.4.0"}]}],"cveId":"CVE-2026-102940","cwes":["CWE-639"],"description":"OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.4.0, controllers/C_Document.class.php write actions, including move_action_process(), do not verify the caller's access to the source document, current patient and category, or destination patient and category before Document::change_patient() performs the mutation. A low-privilege authenticated user can reassign an arbitrary document to a patient or category the user can access and then retrieve it through the normally protected read path. The reassignment occurs before a later list rendering check, so a final HTTP 403 response does not mean the unauthorized write was blocked. This issue is fixed in version 8.4.0.","epss":null,"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/openemr/openemr/security/advisories/GHSA-92rh-g949-4mvv"}],"kev":null,"metrics":[{"score":9.6,"severity":"critical","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"}],"modifiedAt":1793912553527,"publishedAt":1793909251499,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/openemr/openemr/security/advisories/GHSA-92rh-g949-4mvv"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/openemr/openemr/pull/13353"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/openemr/openemr/commit/312b5d042f7fa49cc78ebed041155fba339a991c"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/openemr/openemr/releases/tag/v8_3_0"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/openemr/openemr/security/advisories/GHSA-92rh-g949-4mvv"}],"remediation":[],"revision":"c906fc17693c59d5e08dbb1d834e930c54175e02b914d1df183c8d0a4e1355cb","sources":[{"modifiedAt":1793912553527,"name":"CNA: GitHub_M","retrievedAt":1793913712458,"url":"https://www.cve.org/CVERecord?id=CVE-2026-102940"}],"ssvc":{"assessedAt":1793912534936,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"OpenEMR: Missing Write ACL Allows Unauthorized Document Reassignment","updatedAt":1793913712458}