TriliumNext Trilium Notes up to 0.102.x Quick Search quick_search.ts getNoteIcon iconClass cross site scripting

Summaryinfo

A vulnerability classified as problematic has been found in TriliumNext Trilium Notes up to 0.102.x. This issue affects the function getNoteIcon of the file apps/client/src/widgets/quick_search.ts of the component Quick Search. This manipulation of the argument iconClass causes cross site scripting. This vulnerability is tracked as CVE-2026-45733. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in TriliumNext Trilium Notes up to 0.102.x and classified as problematic. Affected by this vulnerability is the function getNoteIcon of the file apps/client/src/widgets/quick_search.ts of the component Quick Search. The manipulation of the argument iconClass with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. The summary by CVE is:

Trilium Notes is a cross-platform, hierarchical note taking application focused on building large personal knowledge bases. Prior to 0.103.0, the #iconClass label value is returned raw by getNoteIcon() and inserted without HTML attribute encoding into class attributes in apps/client/src/widgets/quick_search.ts and apps/client/src/services/note_autocomplete.ts, allowing a stored payload to execute automatically when a victim opens a new tab or uses Ctrl+J and, because Electron enables nodeIntegration and disables contextIsolation, run operating-system commands as the victim. This issue is fixed in version 0.103.0.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-45733 since 05/13/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are required for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 0.103.0 eliminates this vulnerability.

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Productinfo

Vendor

• TriliumNext

Name

• Trilium Notes

Version

• 0.102

CPE 2.3info

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CPE 2.2info

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