OpenEMR up to 8.4.x Syndromic Surveillance form_icd_codes[] sql injection

Summaryinfo

A vulnerability, which was classified as critical, has been found in OpenEMR up to 8.4.x. This vulnerability affects unknown code of the component Syndromic Surveillance Module. The manipulation of the argument form_icd_codes[] leads to sql injection. This vulnerability is uniquely identified as CVE-2026-49142. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenEMR up to 8.4.x and classified as critical. This issue affects an unknown functionality of the component Syndromic Surveillance Module. The manipulation of the argument form_icd_codes[] with an unknown input leads to a sql injection vulnerability. Using CWE to declare the problem leads to CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

OpenEMR before 8.5.0 contains an authenticated SQL injection vulnerability in the Syndromic Surveillance module that allows users with Clinician-level privileges to read and modify arbitrary database contents by submitting crafted values in the form_icd_codes[] POST parameter to the syndromicsurveillance/index endpoint. Attackers can inject an unquoted numeric IN() clause and UNION DISTINCT SELECT statement using hex-encoded literals to abuse MySQL extractvalue() for error-based exfiltration of bcrypt password hashes and execute stacked queries that reset passwords, resulting in full administrative account takeover.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-49142 since 05/27/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

Upgrading to version 8.5.0 eliminates this vulnerability.

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Productinfo

Type

• Business Process Management Software

Name

• OpenEMR

Version

• 8.0
• 8.1
• 8.2
• 8.3
• 8.4

License

• open-source

Website

• Product: https://github.com/openemr/openemr/

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