PT-2026-42026 · Unknown · Trilium Notes
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Published
2026-05-19
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Updated
2026-05-20
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CVE-2026-39309
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
Name of the Vulnerable Software and Affected Versions
Trilium Notes versions prior to 0.102.2
Description
The Electron configuration allows a TCC Bypass via Prompt Spoofing, where TCC (Transparency, Consent, and Control) is the macOS security framework that manages permissions for sensitive resources. Local attackers can execute malicious code under the identity of the trusted application to trigger misleading permission prompts. This occurs because the
RunAsNode fuse enables launching the application in a special Node.js mode using the -e flag to execute arbitrary system commands with the application's permissions. By using a subprocess, an attacker can request access to TCC-protected resources such as the camera, microphone, screen, and folders like ~/Documents and ~/Downloads. Since macOS treats the subprocess as part of the parent application, the system prompt appears to originate from the trusted app, facilitating social engineering attacks.Recommendations
Update to version 0.102.2.
Exploit
Fix
UI Misrepresentation of Critical Information
Authentication Bypass by Spoofing
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Related Identifiers
Affected Products
Trilium Notes