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CVE-2026-77438: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in TriliumNext Trilium

0
High
VulnerabilityCVE-2026-77438cvecve-2026-77438cwe-200cwe-863
Published: 08/27/2026 (08/27/2026, 19:52:55 UTC)
Source: CVE Database V5
Vendor/Project: TriliumNext
Product: Trilium

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.

CVSS v3.1

Score 7.5high

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Technical Details

Data Version
5.2
Assigner Short Name
GitHub_M
Date Reserved
2026-08-20T19:59:59.604Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a909cffacd9273b49b2d378

Added to database: 08/27/2026, 20:24:31 UTC

Last updated: 08/28/2026, 02:07:13 UTC

Views: 7

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