CVE-2026-94109
Received Received - Intake

Remote Code Execution in openEQUELLA Before 2026.1.0

Publication date: 2026-09-20

Last updated on: 2026-09-20

Assigner: VulnCheck

Description
openEQUELLA versions before 2026.1.0 contain a remote code execution vulnerability in FreeMarker template compilation due to an unsandboxed TemplateClassResolver configuration. Authenticated attackers can inject malicious template expressions through collection summaries, dashboard portlets, or MIME templates to instantiate dangerous classes like freemarker.template.utility.Execute and invoke Runtime.exec for arbitrary command execution.

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Meta Information

Published
2026-09-20
Last Modified
2026-09-20
Generated
2026-09-20
AI Q&A
2026-09-20
EPSS Evaluated
N/A
NVD
CVE-2026-94109
EUVD
EUVD-2026-83731

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
edalex openequella to 2026.1.0 (exc)
openequella openequella to 2026.1.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-1336 The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine.

Attack-Flow Graph

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Executive Summary

CVE-2026-94109 is a remote code execution vulnerability in openEQUELLA versions before 2026.1.0. It occurs due to an unsandboxed FreeMarker template engine configuration. Authenticated attackers can inject malicious template expressions via collection summaries, dashboard portlets, or MIME templates to execute arbitrary commands on the server.

Detection Guidance

To detect this vulnerability, inspect openEQUELLA instances for versions before 2026.1.0. Check FreeMarker template configurations in files like BasicConfiguration.java for unsandboxed TemplateClassResolver usage. Monitor logs for suspicious template expressions in collection summaries, dashboard portlets, or MIME templates.

Impact Analysis

This vulnerability allows authenticated attackers to execute arbitrary commands on the server hosting openEQUELLA. This could lead to full system compromise, data theft, unauthorized modifications, or disruption of services. The impact depends on the server's role and data sensitivity.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Organizations using vulnerable versions may face compliance violations, legal penalties, and reputational damage.

Mitigation Strategies

Upgrade openEQUELLA to version 2026.1.0 or later to apply the security hardening for FreeMarker. Disable or restrict access to template editing features until patched. Review and remove any custom templates that may contain malicious expressions.

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