Is CVE-2026-47727 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-47727 being exploited in the wild.

How severe is CVE-2026-47727?

Informational severity, with a CVSS score of 9, published 27 August 2026.

Is there a fix for CVE-2026-47727?

A patch was published on 2026-08-27: Version 0.104.0 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-47727 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-47727?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-47727: Trilium shareTemplate template injection leads to remote code execution

CVE-2026-47727 · Severity: info · CVSS 9 · Published 2026-08-27

Trilium is an open-source note-taking application that allows users to import note archives and publish notes for sharing. A flaw in the default-enabled "Safe import" filter allows attackers to bypass code-execution safeguards by importing a malicious archive. When a victim publishes an imported note via the share feature, the attacker's JavaScript executes on the server with full system access, enabling complete system compromise.

Quick answers

Is CVE-2026-47727 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-47727 being exploited in the wild.
How severe is CVE-2026-47727?: Informational severity, with a CVSS score of 9, published 27 August 2026.
Which products and versions are affected?: Trilium Trilium <0.104.0.
Is there a fix for CVE-2026-47727?: A patch was published on 2026-08-27: Version 0.104.0 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-47727 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-47727?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a server-side template injection (SSTI) in EJS templating caused by incomplete hardening of dangerous attributes. The shareTemplate relation was not marked isDangerous in BUILTIN_ATTRIBUTES, so the default-on "Safe import" filter failed to neutralize it during import by prefixing disabled:. An attacker can craft a ZIP archive containing a note with a shareTemplate relation pointing to an EJS code note filled with arbitrary JavaScript. When the victim publishes the imported note via the /share/ endpoint, the public-share renderer invokes ejs.render() on the attacker-supplied template without sandboxing, executing code with full access to require, process, filesystem, and network. No authentication is required for the RCE trigger (unauthenticated GET /share/). The fix in version 0.104.0 adds isDangerous: true to the shareTemplate relation definition.

Affected products

Trilium Trilium <0.104.0

Timeline

2026-08-27: disclosed
2026-08-27: patched: Version 0.104.0 released

References

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