Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/TriliumNext/Trilium/commit/c06939448bcc2879fc3c4d328ff7dc63ed
- https://github.com/TriliumNext/Trilium/releases/tag/v0.103.0
- https://github.com/TriliumNext/Trilium/security/advisories/GHSA-h45q-4qc4-8hhg
- https://github.com/TriliumNext/Trilium/security/advisories/GHSA-h45q-4qc4-8hhg
FAQ
What is CVE-2026-45733?
CVE-2026-45733 is a vulnerability with a CVSS score of 8.3 (HIGH). 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(...
How severe is CVE-2026-45733?
CVE-2026-45733 has been rated HIGH with a CVSS base score of 8.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45733?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.