# CVE-2026-45733

## Summary

- **CVE ID:** CVE-2026-45733
- **Severity:** HIGH
- **CVSS Score:** 8.3 (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:** Aug 18, 2026
- **Last Modified:** Aug 18, 2026

## Description

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.

## Affected Products

- TriliumNext — Trilium (< 0.103.0)

## References

- [CNA](https://github.com/TriliumNext/Trilium/security/advisories/GHSA-h45q-4qc4-8hhg)
- [CNA](https://github.com/TriliumNext/Trilium/commit/c06939448bcc2879fc3c4d328ff7dc63ed6b5009)
- [CNA](https://github.com/TriliumNext/Trilium/releases/tag/v0.103.0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.30%
- **EPSS Percentile:** 22.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._