---
id: CVE-2026-45733
title: >-
  Trilium Notes is a cross-platform, hierarchical note taking application
  focused on building large personal knowledge bases
summary: >-
  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…
severity: high
cvss: 8.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L'
cwe:
  - CWE-79
  - CWE-83
  - CWE-693
published: '2026-08-18'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T20:09:01.757'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45733'
references:
  - url: >-
      https://github.com/TriliumNext/Trilium/commit/c06939448bcc2879fc3c4d328ff7dc63ed6b5009
    label: security-advisories@github.com
  - url: 'https://github.com/TriliumNext/Trilium/releases/tag/v0.103.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/TriliumNext/Trilium/security/advisories/GHSA-h45q-4qc4-8hhg
    label: security-advisories@github.com
  - url: >-
      https://github.com/TriliumNext/Trilium/security/advisories/GHSA-h45q-4qc4-8hhg
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00386
epssPercentile: 0.32518
ingestedAt: '2026-09-18T20:51:25.626Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.