TriliumNext Trilium up to 0.102.1 API Endpoint path traversal

Summaryinfo

A vulnerability, which was classified as critical, has been found in TriliumNext Trilium up to 0.102.1. Affected is an unknown function of the component API Endpoint. This manipulation causes path traversal. This vulnerability appears as CVE-2026-45668. The attack requires local access. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in TriliumNext Trilium up to 0.102.1. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component API Endpoint. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Trilium Notes is a cross-platform, hierarchical note taking application focused on building large personal knowledge bases. Prior to 0.102.2, a malicious ZIP archive imported with safe import enabled achieves RCE via #docName path traversal and XSS by combining a payload note (type: code, mime: text/plain) containing raw HTML/JS and a trigger note (type: doc or type: launcher) with a #docName label that uses ../ path traversal to point at the payload note's API endpoint. The desktop client Electron renderer runs with nodeIntegration enabled, so an RCE is triggered once the payload is executed. This vulnerability is fixed in 0.102.2.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-45668 since 05/12/2026. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 0.102.2 eliminates this vulnerability.

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Productinfo

Vendor

• TriliumNext

Name

• Trilium

Version

• 0.102.0
• 0.102.1

Website

• Product: https://github.com/TriliumNext/Trilium/

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CPE 2.2info

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