CVE-2026-73052: SiYuan before v3.7.4 Stored XSS via Attribute-View Field Names

Severity: critical (CVSS 9.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-15 · updated 2026-08-26
Weakness: CWE-79

Description

SiYuan before v3.7.4 stores attribute-view field names without HTML escaping and interpolates them directly into option elements via innerHTML in the sort menu. Attackers can inject markup by renaming a database field to execute arbitrary JavaScript when users open the sort menu, with Node integration enabled in the desktop client enabling code execution.

Affected products

siyuan-note siyuan: before 3.7.4 — fixed in 3.7.4

How to fix

Upgrade to a fixed version: siyuan-note siyuan 3.7.4. Check the vendor advisory for mitigations.

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-g3jx-227v-x2x4
https://www.vulncheck.com/advisories/siyuan-before-stored-xss-via-attribute-view-field-names
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-g3jx-227v-x2x4

Get alerted when CVE-2026-73052 or the next vulnerability affects your stack