Severity: High (CVSS 8.7)

Affected Systems: Affected products listed in the NVD and vendor advisory

Overview

Arbitrary File Read, Write, Rename, and Delete in Logseq

A high vulnerability identified as CVE-2026-47899 has been disclosed.

The Electron preload script in Logseq exposes an API method that allows the renderer process to invoke IPC handlers without proper path validation. An attacker with JavaScript execution in the renderer (e.g. via XSS or a malicious plugin), can read, write, or delete arbitrary files on the user's system.
While only version v0.10.15 was tested and confirmed as vulnerable, status of other versions is unknown since this issue was not addressed by a patch.

Risk

CVSS and CISA data indicate the following:

  • Review the NVD and vendor advisory for exploit conditions and impact

OpenCVE Analysis

CVSS v4.0 8.7 HighCVSS v3.1 N/ACVSS v3.0 N/ACVSS v2 N/AKEV noEPSS noSSVC no

  • OpenCVE title: Arbitrary File Read, Write, Rename, and Delete in Logseq
  • Severity score: High (CVSS 8.7)
  • Weaknesses: CWE-749

Required Action

Review the linked vendor and NVD advisory, then apply the vendor-provided update or mitigation for the affected product.

Prioritize systems where the affected product is internet-facing, handles authentication, or runs with elevated privileges.

Verify Updates

Confirm whether your environment uses the affected product(s): Affected products listed in the NVD and vendor advisory.

After remediation, verify the installed version against the fixed or unaffected versions listed by the vendor.

Temporary Mitigation (if patch is not available)

Use the mitigation published by the vendor. If no vendor mitigation is available, reduce exposure to the affected product, restrict access to trusted users or networks, and increase monitoring until an update can be applied.

Recommendation

  • Use OpenCVE, vendor, and source references as the source of truth for affected versions and remediation
  • Patch or mitigate affected products after confirming exposure in your environment
  • Monitor affected systems for unusual activity until remediation is complete

Support

If you require assistance, please contact our support team.

Immediate action is strongly recommended to protect your infrastructure.

Source Details



Tuesday, June 9, 2026

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