CVE-2026-41258
CriticalCVSS 9.1Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
In OpenMRS, from version 2.7.0 to before 2.7.9 and 2.8.6, the ConceptReferenceRangeUtility.evaluateCriteria() method evaluates database-stored criteria as Apache Velocity templates without proper sandbox configuration. This allows unrestricted Java reflection through template expressions.
Risk Assessment
A user with Manage Concepts privilege can store a malicious Velocity template expression that will be automatically executed during observation validation. This poses a serious risk to patient data security.
Recommendation
It is recommended to upgrade OpenMRS to version 2.7.9 or 2.8.6 to mitigate this vulnerability.
Other vulnerabilities in OpenMRS Core
See all- CVE-2026-40076High
In OpenMRS Core versions 2.7.8 and earlier and 2.8.0 through 2.8.5, the module upload endpoint is vulnerable to a Zip Slip path traversal attack. A crafted archive can write files outside the intended module directory, allowing an authenticated attacker to achieve remote code execution by uploading a JSP file.
- CVE-2026-40075High
OpenMRS Core up to version 2.7.8 and versions 2.8.0-2.8.5 contain a path traversal vulnerability in the `/openmrs/moduleResources/{moduleid}` endpoint. The getFile() function does not validate the path, allowing an unauthenticated attacker to read arbitrary files, including /etc/passwd and configuration files with database credentials. Exploitation is only possible on Apache Tomcat versions prior to 8.5.31.
Original NVD description (English source)
OpenMRS is an open source electronic medical record system platform. From 2.7.0 to before 2.7.9 and 2.8.6, the ConceptReferenceRangeUtility.evaluateCriteria() method in OpenMRS Core evaluates database-stored criteria strings as Apache Velocity templates without any sandbox configuration. The VelocityEngine is initialized with only logging properties and noSecureUberspector, leaving the default UberspectImpl in place, which allows unrestricted Java reflection through template expressions. A user with the Manage Concepts privilege can store a malicious Velocity template expression in a concept's reference range criteria field. This payload is then executed automatically whenever a user or API call validates an observation against the affected concept. The Velocity context exposes $patient (the Person / Patient object), $obs (the Obs object), and $fn (the ConceptReferenceRangeUtility instance with access to the full OpenMRS service layer). This vulnerability is fixed in 2.7.9 and 2.8.6.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS