TI-2026-36250 Aliases CVE-2026-48996

Trilium: Malicious import with GeoMap marker title XSS leads to RCE on the desktop client

HIGH 75CWE-79Published 2026-08-27 · Updated 2026-08-29

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 does not sanitize note titles, and the GeoMap note view interpolates a marker note's title into raw HTML that is rendered as innerHTML, allowing an attacker-supplied import archive to inject script that runs when the map is displayed. Because Safe import neutralizes scripts but never escapes titles, a note whose title contains an HTML event-handler payload survives the import and executes as soon as the victim opens the GeoMap that renders its marker. 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: Total

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-2026-48996
2026-10-14 CVSS score added · NVD

References

Exploit 1

https://github.com/TriliumNext/Trilium/security/advisories/GHSA-7qfw-c9gj-2xq2

Patch 1

https://github.com/TriliumNext/Trilium/commit/5245ad70f6ecc54e0309fb83e596f15fe5dc5bf6

TI-2026-38639 Trilium: Note Import to RCE via Mind Elixir dangerouslySetInnerHtml 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