CVE-2026-82653

High

Description

SiYuan before v3.8.1 contains a stored cross-site scripting vulnerability in confirmDialog() where unescaped package names and notebook names are interpolated directly into innerHTML assignments. Attackers can submit malicious bazaar packages with HTML/script payloads in the name field that execute in users' browsers when uninstalling packages or unlocking encrypted notebooks.

SeverityHigh

CVSS8.9

Exploit probability—

ProductSiyuan

PublishedAug 30, 2026

First seenAug 30, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

siyuan-note siyuan3.8.1 or later

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-hvwp-43j9-4xgf

Affected products

Product	Affected versions	Fixed in
siyuan-note siyuan	v < 3.8.1	3.8.1

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.