TI-2026-54012 Aliases CVE-2026-77438

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

HIGH 72CWE-200Published 2026-08-27 · Updated 2026-08-28

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Information disclosure, Security bypass
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200 and CWE-863.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00423 36th 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: Yes
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-2026-77438

References

Exploit 1

https://github.com/TriliumNext/Trilium/security/advisories/GHSA-6rxv-6w3q-7mv9

Patch 1

https://github.com/TriliumNext/Trilium/commit/49fc7b67d9d49f01833e1ad9712ec83b079f98d2

TI-2026-36250 Trilium: Malicious import with GeoMap marker title XSS leads to RCE on the desktop client CVSS 4.0CRITICAL 9.3
TI-2026-38639 Trilium: Note Import to RCE via Mind Elixir dangerouslySetInnerHtml CVSS 4.0CRITICAL 9.3
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