Is CVE-2026-41258 actively exploited?

No active exploitation of CVE-2026-41258 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-41258 be exploited remotely?

Yes. CVE-2026-41258 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-41258?

CVE-2026-41258 has a CVSS score of 9.1 (CRITICAL).

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CRITICAL

CVE-2026-41258

CWE-94Published: May 15, 2026· Updated: May 18, 2026

9.1

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:13.4th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-41258 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.1.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.