PT-2026-47800 · Logseq · Logseq

Bartłomiej Dmitruk · Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-47901

NVD

CVSS v4.0

4.6

Medium

Base vector

AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-47901

Affected Products

Logseq

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-47901 · Security Note
• https://logseq.com · Note
• https://cert.pl/en/posts/2026/06/CVE-2026-9279 · Note