openEQUELLA < 2026.1.0 Authenticated Stored SSTI via FreemarkerPortletRenderer
Summary
| CVE | CVE-2026-94109 |
|---|---|
| State | PUBLISHED |
| Assigner | VulnCheck |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-20 12:17:06 UTC |
| Updated | 2026-09-24 12:17:13 UTC |
| 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. |
Risk And Classification
Primary CVSS: v4.0 8.6 HIGH from [email protected]
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.007780000 probability, percentile 0.539370000 (date 2026-09-24)
Problem Types: CWE-1336 | CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 8.6 | HIGH | 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/E:X/C... |
| 4.0 | CNA | CVSS | 8.6 | HIGH | 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 |
| 3.1 | [email protected] | Secondary | 8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSS | 8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
CVSS v4.0 Breakdown
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Openequella | OpenEQUELLA | affected 2026.1.0 semver | Not specified |
| CNA | Openequella | OpenEQUELLA | unaffected 2026.1.0 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| blog.evan.lat/posts/openeq | [email protected] | blog.evan.lat | |
| github.com/openequella/openEQUELLA/releases/tag/2026.1.0 | [email protected] | github.com | |
| github.com/openequella/openEQUELLA/commit/d6e165afc986f8a3ed912cdb367d5a... | [email protected] | github.com | |
| www.vulncheck.com/advisories/openequella-authenticated-stored-ssti-via-freemark... | [email protected] | www.vulncheck.com | |
| github.com/openequella/openEQUELLA | MITRE | github.com | |
| github.com/openequella/openEQUELLA/blob/8bd24b1dcf26cc3d74757e6b982fc197... | MITRE | github.com | |
| github.com/openequella/openEQUELLA/blob/8bd24b1dcf26cc3d74757e6b982fc197... | MITRE | github.com | |
| github.com/openequella/openEQUELLA/blob/8bd24b1dcf26cc3d74757e6b982fc197... | MITRE | github.com | |
| www.vulncheck.com/advisories/openequella-before-2026.1.0-remote-code-execution-... | MITRE | www.vulncheck.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: evan (en)
CNA: VulnCheck (en)
Additional Advisory Data
Workarounds
CNA: Deployments that can't upgrade immediately should firewall or VPN the /invoker/* endpoints and restrict them to only those who genuinely need access.