CVE-2026-47901 MEDIUM

CVE-2026-47901: Iframe escape by plugins in Logseq

Vendor Logseq
Product logseq
Weakness CWE-79 · XSS
Published June 9, 2026
Last update June 9, 2026

CVSS base score

4.6/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

Logseq is vulnerable to a sandbox escape flaw where plugins running in sandboxed iframes can inject arbitrary HTML attributes, such as event handlers, into their container element in the host DOM. Due to a disabled Content Security Policy (CSP), this allows a malicious plugin to execute arbitrary JavaScript in the privileged host context, potentially gaining unauthorized access to filesystem APIs. 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

Related vulnerabilities

04Related CVE