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.
History

Fri, 28 Aug 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 28 Aug 2026 06:15:00 +0000

Type Values Removed Values Added
First Time appeared Triliumnext
Triliumnext trilium
Vendors & Products Triliumnext
Triliumnext trilium

Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Trilium: Malicious import with GeoMap marker title XSS leads to RCE on the desktop client
Weaknesses CWE-79
CWE-94
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-08-27T17:36:07.483Z

Updated: 2026-08-29T03:56:03.899Z

Reserved: 2026-05-26T23:26:07.976Z

Link: CVE-2026-48996

cve-icon Vulnrichment

Updated: 2026-08-28T15:54:05.907Z

cve-icon NVD

Status : Received

Published: 2026-08-27T20:17:47.127

Modified: 2026-08-29T04:18:05.523

Link: CVE-2026-48996

cve-icon Redhat

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