CVE-2026-33067

CRITICAL

9.0

Description

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.

Details CVE

Score CVSS v3.19.0

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurREQUIRED

Publie3/20/2026

Derniere modification3/23/2026

Sourcenvd

Observations honeypot0

Produits affectes

b3log:siyuan

Faiblesses (CWE)

CWE-79

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-mvpm-v6q4-m2pf(security-advisories@github.com)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-mvpm-v6q4-m2pf(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

Aucune correlation enregistree

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