Vulnerability · Published Jun 9, 2026 · Assigned by CERT-PL

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

High 8.7

In plain English

A high-severity security flaw in logseq from logseq. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)0.1%top 96.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
logseq	logseq	0 – through 0.10.15

Weakness: CWE-749 · 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

References

https://cert.pl/en/posts/2026/06/CVE-2026-9279/ third-party-advisory
https://logseq.com/ product