TriliumNext Trilium up to 0.103.0 GeoMap cross site scripting

Summaryinfo

A vulnerability described as problematic has been identified in TriliumNext Trilium up to 0.103.0. This affects an unknown function of the component GeoMap. Such manipulation leads to cross site scripting. This vulnerability is listed as CVE-2026-48996. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in TriliumNext Trilium up to 0.103.0 and classified as problematic. Affected by this issue is an unknown code block of the component GeoMap. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

Trilium is an open-source hierarchical note-taking application. In versions up to and including 0.103.0, the default-on "Safe import" filter does not sanitize note titles, and the GeoMap note view interpolates a marker note's title into raw HTML that is rendered as innerHTML, allowing an attacker-supplied import archive to inject script that runs when the map is displayed. Because Safe import neutralizes scripts but never escapes titles, a note whose title contains an HTML event-handler payload survives the import and executes as soon as the victim opens the GeoMap that renders its marker. On the desktop client the Electron renderer runs with Node integration enabled, so the injected JavaScript escalates from cross-site scripting to full remote code execution on the victim's machine. This issue is fixed in version 0.104.0.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-48996 since 05/27/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 0.104.0 eliminates this vulnerability.

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Productinfo

Vendor

• TriliumNext

Name

• Trilium

Version

• 0.103

Website

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

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