CVE-2026-39309 — Trilium Notes is a cross-platform, hierarchical note taking

title: CVE-2026-39309 - Trilium Notes TCC Bypass via Malicious Node Execution
id: scw-2026-05-20-ai-1
status: experimental
level: critical
description: |
  Detects the execution of Trilium Notes with the '-e' flag in its command line, which is a known indicator of the TCC Bypass vulnerability (CVE-2026-39309). This flag allows for the execution of arbitrary system commands within the context of Trilium Notes, enabling attackers to spoof permission prompts and access TCC-protected resources.
author: SCW Feed Engine (AI-generated)
date: 2026-05-20
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-39309/
tags:
  - attack.execution
  - attack.t1059.003
logsource:
    category: process_creation
detection:
  selection:
      Image|contains:
          - 'trilium-notes'
      CommandLine|contains:
          - '-e'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse