CVE-2026-39309Public exploit

TCC access via enabled RunAsNode fuse

Published May 19, 2026 · Updated May 20, 2026

TCC prompt spoofing in Trilium Notes 0.102.1 and earlier allows local users to access protected macOS resources via deceptive prompts. The Electron desktop build leaves the RunAsNode fuse enabled, so its executable accepts Node.js code and inherits the app's identity and TCC grants. Exploitation requires local code execution and approval of a misleading permission prompt, after which attacker code can read protected files or capture the screen, camera, or microphone.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

TCC prompt spoofing in Trilium Notes 0.102.1 and earlier allows local users to access protected macOS resources via deceptive prompts. The Electron desktop build leaves the RunAsNode fuse enabled, so its executable accepts Node.js code and inherits the app's identity and TCC grants. Exploitation requires local code execution and approval of a misleading permission prompt, after which attacker code can read protected files or capture the screen, camera, or microphone.

The record

CVE
CVE-2026-39309
Published
May 19, 2026
Updated
May 20, 2026
Vendor
Trilium Next
Product
Trilium Notes
Classifications
CWE-290, CWE-451, T1036
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 19, 2026CVE publishedPublication date reported by the CVE source.
  2. May 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.102.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Trilium Next · Trilium Notesversion=< 0.102.2

Published CVSS scores

5.5GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
CWE-451User Interface (UI) Misrepresentation of Critical Information
T1036Masquerading

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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