CVE-2026-47899 HIGH

CVE-2026-47899: Arbitrary File Read, Write, Rename, and Delete in Logseq

Vendor Logseq
Product logseq
Weakness CWE-749
Published June 9, 2026
Last update June 9, 2026

CVSS base score

8.7/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 9, 2026 CVE published
June 9, 2026 Record updated