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8.6
CVE-2026-94109: openEQUELLA lets logged‑in users run code via portlet
CVE-2026-94109 · published 9 days ago
Summary
If a user can log in to openEQUELLA, they can place a specially crafted piece of code that will be stored on the system. When any employee later opens a dashboard that contains the affected portlet, the stored code runs on the server, giving the attacker the ability to control the system. The fix is to upgrade to version 2026.1.0 or later and apply any available security patches.
What to do
- Update openequella openequella to version 2026.1.0 or later.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| openequella | openequella | < 2026.1.0 |
Original advisory text
openEQUELLA < 2026.1.0 Authenticated Stored SSTI via FreemarkerPortletRenderer
openEQUELLA before 2026.1.0 contains an authenticated stored server-side template injection vulnerability in FreemarkerPortletRenderer.renderHtml() that allows any authenticated non-guest user to achieve remote code execution by storing a malicious FreeMarker payload through a POST request to the RemotePortletService invoker endpoint. The markup field from stored portlet configuration is passed directly to custFactory.createResult() without a TemplateClassResolver restriction or FreeMarker sandboxing in BasicConfiguration, leaving built-ins such as ?new and freemarker.template.utility.Execute available, causing the payload to execute in the application server process context when any user renders a dashboard containing the affected portlet.
References
- https://github.com/openequella/openEQUELLA Product
- https://github.com/openequella/openEQUELLA/blob/8bd24b1dcf26cc3d74757e6b982fc197... URL
- https://github.com/openequella/openEQUELLA/commit/d6e165afc986f8a3ed912cdb367d5a...
- https://github.com/openequella/openEQUELLA/releases/tag/2026.1.0
- https://www.vulncheck.com/advisories/openequella-before-2026.1.0-remote-code-exe... Vendor Advisory
- https://github.com/openequella/openEQUELLA/blob/8bd24b1dcf26cc3d74757e6b982fc197... URL
- https://github.com/openequella/openEQUELLA/blob/8bd24b1dcf26cc3d74757e6b982fc197... URL
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94109... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-94109 Vendor Advisory
- https://blog.evan.lat/posts/openeq
- https://www.vulncheck.com/advisories/openequella-authenticated-stored-ssti-via-f...
Severity
8.6
High
CVSS 3.1: 8.8 (NVD)
CVSS 4.0: 8.7 (NVD)
Exploitation
EPSS <1%
Type
CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
Timeline
Published20 Sep 2026
Updated29 Sep 2026
First seen20 Sep 2026
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