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-2026-77438

CVE-2026-77438HIGH

TriliumNext Trilium — Trilium unauthenticated share-search discloses password-protected and hidden shared notes

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  N  N    7.5   .0042   35.1     —

AFFECTED
  Product  Versions     Fixed
  Trilium  < 0.104.0 –  —

TIMELINE
  Aug 20  Reserved by GitHub_M
  Aug 27  Published (CNA: GitHub_M)
  Oct 14  EXPLOIT PUBLISHED — CVE-2026-77438 (TriliumNext Trilium). Public exploit reference added.

CWE-200, CWE-863 · CNA: GitHub_M · CVSS v3.1 · 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 public share-search endpoint does not enforce the per-note shareCredentials and shareHiddenFromTree controls, allowing an unauthenticated visitor to read the titles, tree paths, and content of protected shared notes. The endpoint authorizes only the ancestor note supplied in the request and then runs a full-text search across the entire published subtree, returning each matching note's title, share identifier, and hierarchical path without re-checking whether that individual note requires a share password or is hidden from the navigation tree. Because the search matches note content, an attacker can enumerate protected notes and use the endpoint as a boolean oracle that confirms arbitrary substrings, recovering the full contents of notes that should be gated behind a password. This issue is fixed in version 0.104.0.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 20, 2026	Reserved	Reserved by GitHub_M
August 27, 2026	Published	Published (CNA: GitHub_M)
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-77438 (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-200 · CWE-863

References (2)

https://github.com/TriliumNext/Trilium/commit/49fc7b67d9d49f01833e1ad9712ec83b079f98d2 [Patch]
https://github.com/TriliumNext/Trilium/security/advisories/GHSA-6rxv-6w3q-7mv9 [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-77438 at cve.org

Vendors: triliumnext

Weaknesses: CWE-200 · CWE-863

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-77438 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.