CVE-2026-33067

published 2026-03-20

CVE-2026-33067: SiYuan is a personal knowledge management system. Versions 3.6.0 and below render package metadata fields (displayName, description) using template literals…

Priority P3 53 critical 9 CVSS 3.1

AV N AC L PR L UI R S C C H I H A H

SiYuan is a personal knowledge management system. Versions 3.6.0 and below render package metadata fields (displayName, description) using template literals without HTML escaping. A malicious package author can inject arbitrary HTML/JavaScript into these fields, which executes automatically when any user browses the Bazaar page. Because SiYuan's Electron configuration enables nodeIntegration: true with contextIsolation: false, this XSS escalates directly to full Remote Code Execution on the victim's operating system — with zero user interaction beyond opening the marketplace tab. This issue has been fixed in version 3.6.1.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
b3log	siyuan	< 3.6.1	3.6.1
github.com	siyuan-note_siyuan_kernel	>= 0 < 0.0.0-20260317012524-fe4523fff2c8	0.0.0-20260317012524-fe4523fff2c8
siyuan-note	siyuan	< 3.6.1	3.6.1

CVSS provenance

nvd v3.1 9.0 CRITICAL CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

nvd v4.0 5.3 MEDIUM CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/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

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CWE-79