CVE-2026-40322

Katalog CVE

CVSS 9.0 · Critical EPSS 0,53%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada b3log siyuan. Skor CVSS 3.1 9.0 (Critical) menurut github.com.

Deskripsi (NVD)

SiYuan is an open-source personal knowledge management system. In versions 3.6.3 and below, Mermaid diagrams are rendered with securityLevel set to "loose", and the resulting SVG is injected into the DOM via innerHTML. This allows attacker-controlled javascript: URLs in Mermaid code blocks to survive into the rendered output. On desktop builds using Electron, windows are created with nodeIntegration enabled and contextIsolation disabled, escalating the stored XSS to arbitrary code execution when a victim opens a note containing a malicious Mermaid block and clicks the rendered diagram node. This issue has been fixed in version 3.6.4.

Rincian

Terbit di NVD

16 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.0 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94: Improper Control of Generation of Code ('Code Injection')

EPSS (30 hari)

0,53% peluang dieksploitasi; lebih tinggi dari 42,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-x63q-3rcj-hhp5 advisory pihak ketiga
• https://github.com/siyuan-note/siyuan/releases/tag/v3.6.4 release notes