SEPTEMBER 18, 2026
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Case File

CVE-2026-77438

HIGH · CVSS 7.5 EPSS 0.24% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-27 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

The vulnerability affects the public share-search endpoint of Trilium, an open-source hierarchical note-taking application, allowing unauthenticated users to access protected notes by bypassing share credentials and visibility controls. This can lead to unauthorized disclosure of sensitive information, including note titles and content, posing a significant risk to users who store confidential data in the application. Organizations using versions up to 0.103.0 should prioritize upgrading to version 0.104.0 to mitigate this high-severity risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-77438
Severity
HIGH
CVSS
7.5
EPSS
0.24%
Oracle

Original NVD 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.