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VulnerabilityPublished

CVE-2026-39932: OpenEMR through 8.2.0 contains a remote code execution vulnerability in the document category tree component (library/classes/Tree.class.php) that

Source GCVE Database

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Not known to be exploited · CVSS 9.1 Critical.

Data as of 1 Nov 2026, 22:58 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
2.0% chance of exploitation in 30 days – higher than 80% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.

What to do

AI-suggested

Until a patch is available, restrict administrator access to trusted personnel only and monitor for suspicious database changes. Consider disabling or restricting access to the document category tree component if feasible. Avoid exposing OpenEMR instances to untrusted networks without additional protective controls.

Description

OpenEMR versions through 8.2.0 contain a critical remote code execution vulnerability in the document category tree component. Authenticated administrators can inject PHP payloads into the categories database table by exploiting a flaw that allows altering the id column type to VARCHAR and inserting malicious code. This payload is executed via an unsanitized eval() call whenever the CategoryTree class is instantiated, including on pages accessible to unauthenticated or low-privilege users, resulting in command execution as the web server user.

References

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