CVE-2026-66396
9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Summary
SiYuan before v3.7.2 fails to escape the title-img Individual Attribute List value when rendering Gallery and Kanban cover images, allowing stored cross-site scripting via unescaped style attribute interpolation. Attackers with editor permissions can inject onload handlers that execute arbitrary code in the Electron renderer with full Node.js access when victims open affected documents.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| siyuan-note | siyuan | 0 < 3.7.2 | affected |
| siyuan-note | siyuan | 3.7.2 | unaffected |
Weaknesses
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: total
Additional References
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-5rxg-wh59-mg34
- https://www.vulncheck.com/advisories/siyuan-before-stored-xss-to-rce-via-title-img-ial
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