CVE-2026-39309
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk7th percentile - higher than 7% of all known CVEs
Summary
Trilium Notes versions 0.102.1 and prior contain a vulnerability to TCC bypass via prompt spoofing in the Electron configuration. A local attacker can run malicious code under the trusted app's identity using the RunAsNode flag to execute arbitrary system commands, leading to misleading macOS permission prompts and access to protected resources.
Risk Assessment
An attacker can gain access to protected macOS resources such as camera, microphone, screen, and folders like ~/Documents and ~/Downloads, undermining the system's security model.
Recommendation
Update Trilium Notes to version 0.102.2 or later, which contains the fix.
Other vulnerabilities in Trilium Notes
See all- CVE-2026-45668Critical
Trilium Notes is a cross-platform hierarchical note-taking application. Prior to version 0.102.2, a malicious ZIP archive imported with safe import enabled achieves RCE via #docName path traversal and XSS. It combines a payload note (type: code, mime: text/plain) containing raw HTML/JS and a trigger note (type: doc or launcher) with a #docName label using ../ path traversal to point at the payload note's API endpoint. The desktop client Electron runs with nodeIntegration enabled, so RCE is triggered once the payload is executed. This vulnerability is fixed in version 0.102.2.
- CVE-2026-91021Medium
Trilium Notes version v0.103.0 and earlier contains a stored cross-site scripting (XSS) vulnerability in the share renderer for webView notes due to improper HTML escaping of user-controlled #webViewSrc values. This vulnerability allows attackers with note-authoring privileges to inject arbitrary JavaScript that executes for any user who opens the shared note, including administrators.
- CVE-2026-45733High
Trilium Notes, a hierarchical note-taking application, has an XSS vulnerability in the #iconClass value, which is inserted without HTML attribute encoding. A stored payload can execute automatically when a victim opens a new tab or uses Ctrl+J, and due to enabled nodeIntegration and disabled contextIsolation in Electron, it can run operating-system commands. The issue is fixed in version 0.103.0.
- CVE-2026-39311Medium
Trilium Notes version 0.102.1 and prior contain a critical vulnerability allowing unauthenticated remote code execution (RCE). Lack of SVG sanitization combined with a disabled Content Security Policy (CSP) and a publicly reachable backend execution API allows an attacker to execute arbitrary Node.js code on the server by tricking an authenticated user into viewing a malicious SVG attachment.
- CVE-2026-39310High
Trilium Notes versions 0.102.1 and prior, when running in an Electron environment, disables authentication for the Clipper API, allowing unauthenticated attackers on the local network to access API endpoints without password, API token, or CSRF protection. An attacker can scan ports and gain unauthorized access to data, as well as conduct phishing or compromise the local system.
- CVE-2026-35593Medium
Trilium Notes versions up to 0.102.1 are vulnerable to Local File Inclusion (LFI). An authenticated attacker can read arbitrary files from the server's filesystem via the uploadModifiedFileToAttachment function.
Original NVD description (English source)
Trilium Notes is a cross-platform, hierarchical note taking application focused on building large personal knowledge bases. In versions 0.102.1 and prior, the Electron configuration is vulnerable to TCC Bypass via Prompt Spoofing, allowing local attackers to trigger misleading macOS permission prompts by running malicious code under the identity of the trusted app. The root cause is that the RunAsNode fuse allows launching the app in a special Node.js mode using -e to execute arbitrary system commands with Trilium Notes's permissions and identity. An attacker can leverage this through a subprocess to request any sensitive permissions, such as access to hardware (camera, microphone) and TCC-protected files, causing the TCC system prompt to appear as if the request came from Trilium rather than the attacker's code, because macOS treats the subprocess as part of the parent application. Exploitation allows access to TCC-protected resources like the screen, camera, microphone, and folders such as ~/Documents and ~/Downloads, undermining macOS's security model and UI integrity through social engineering. This issue has been fixed in version 0.102.2.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS