CVE-2026-33934

Summary

OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.3 have a missing authorization check in portal/sign/lib/show-signature.php that allows any authenticated patient portal user to retrieve the drawn signature image of any staff member by supplying an arbitrary user value in the POST body. The companion write endpoint (save-signature.php) was already hardened against this same issue, but the read endpoint was not updated to match. Version 8.0.0.3 patches the issue.

Affected Software

VendorProductVersion RangeStatus
openemropenemr< 8.0.0.3affected

Weaknesses

  • CWE-639: CWE-639: Authorization Bypass Through User-Controlled Key
  • CWE-862: CWE-862: Missing Authorization

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: partial

References