CVE-2026-45733: high-severity vulnerability in TriliumNext Trilium
Trilium: Stored XSS in note icon rendering leads to Remote Code Execution in Electron desktop app
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.3epss 0.4%
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:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
Affected products
TriliumNext · TriliumRelated CVEs — TriliumNext Trilium
In the same product, most dangerous first.
CVE-2026-35593MEDIUMTrilium Notes has Local File Inclusion via upload modified file API endpointEPSS 0.6%CVE-2025-68621HIGHTrilium Notes has a Timing Attack Vulnerability in /api/login/syncEPSS 0.6%CVE-2026-53580HIGHTrilium arbitrary file read and denial of service via file:// URLs in the automatic image-download featureEPSS 0.5%CVE-2026-47727HIGHTrilium: RCE via `shareTemplate` relation missing `isDangerous` flag — Safe import bypass leading to EJS SSTI (Incomplete Fix of CVE-2026-45668)EPSS 0.5%CVE-2026-77438HIGHTrilium unauthenticated share-search discloses password-protected and hidden shared notesEPSS 0.4%CVE-2025-53544HIGHTrilium Notes is Vulnerable to Brute-force Protection Bypass via Initial Sync Seed RetrievalEPSS 0.4%