TI-2026-38639 Aliases CVE-2026-53578

Trilium: Note Import to RCE via Mind Elixir dangerouslySetInnerHtml

HIGH 73CWE-79Published 2026-08-27 · Updated 2026-08-31

Key facts

Attack vector: Local
Privileges required: None
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting, Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79 and CWE-94.

Summary

Trilium is an open-source hierarchical note-taking application. In versions up to and including 0.103.0, the default-on "Safe import" filter sanitizes HTML only for text notes and excludes the mindMap note type, whose JSON content is stored without sanitization, allowing an attacker-supplied import archive to embed a payload that renders as arbitrary HTML. A mind map node can carry a dangerouslySetInnerHTML property that the Mind Elixir library assigns directly to a node's innerHTML, so a malicious note survives Safe import and executes script as soon as the victim opens the imported mind map. On the desktop client the Electron renderer runs with Node integration enabled, so the injected JavaScript escalates from cross-site scripting to full remote code execution on the victim's machine. This issue is fixed in version 0.104.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00252 16th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed Trilium (TriliumNext): 0.104.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
TriliumNext	Trilium	before 0.104.0	0.104.0	Patch available	CNA

Trilium VendorTriliumNext Affected before 0.104.0 Fixed in 0.104.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:triliumnotes:trilium::::::::	before 0.104.0	Vulnerable	TriliumNext

cpe:2.3:a:triliumnotes:trilium:*:*:*:*:*:*:*:* Versions before 0.104.0 Vulnerable ·TriliumNext

Remediation

Fix · CNA Trilium (TriliumNext) Fixed in 0.104.0

Timeline

2026-10-02 Threatist record created from CVE-2026-53578
2026-10-14 CVSS score added · NVD

References

Exploit 1

https://github.com/TriliumNext/Trilium/security/advisories/GHSA-rj57-j38v-3577

Patch 1

https://github.com/TriliumNext/Trilium/commit/15da3ff626c21fbadbc980ebb39e2f97085503a4

TI-2026-36250 Trilium: Malicious import with GeoMap marker title XSS leads to RCE on the desktop client CVSS 4.0CRITICAL 9.3
TI-2026-54012 Trilium unauthenticated share-search discloses password-protected and hidden shared notes CVSS 3.1HIGH 7.5
TI-2026-35228 Code injection in TriliumNext Trilium CVSS 4.0HIGH 8.6
TI-2026-38641 Trilium arbitrary file read and denial of service via file:// URLs in the automatic image-download feature CVSS 3.1HIGH 8.1
TI-2026-38640 Trilium: Note Import to RCE via Book Note CVSS 4.0CRITICAL 9.3
TI-2025-42139 Trilium Notes has a Timing Attack Vulnerability in /api/login/sync CVSS 3.1HIGH 7.4

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences