Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-48996

CVE-2026-48996CRITICAL

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

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   L   L   N   N   A   H   H   H    9.3   .0025   15.6     —

AFFECTED
  Product  Versions     Fixed
  Trilium  < 0.104.0 –  —

TIMELINE
  May 26  Reserved by GitHub_M
  Aug 27  Published (CNA: GitHub_M)
  Oct 14  EXPLOIT PUBLISHED — CVE-2026-48996 (TriliumNext Trilium). Public exploit reference added.

CWE-79, CWE-94 · CNA: GitHub_M · CVSS v4.0 · 2 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 26, 2026	Reserved	Reserved by GitHub_M
August 27, 2026	Published	Published (CNA: GitHub_M)
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-48996 (TriliumNext Trilium). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
TriliumNext	Trilium	—	< 0.104.0	—

Weaknesses

CWE-79 · CWE-94

References (2)

https://github.com/TriliumNext/Trilium/commit/5245ad70f6ecc54e0309fb83e596f15fe5dc5bf6 [Patch]
https://github.com/TriliumNext/Trilium/security/advisories/GHSA-7qfw-c9gj-2xq2 [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-48996 at cve.org

Vendors: triliumnext

Weaknesses: CWE-79 · CWE-94

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-48996 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.