Vulnerability details
CVE-2026-93922
siyuan-note siyuan
SiYuan through 3.8.4 Stored XSS via notebook names
CVSS 4.0
8.6High
Official description
SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note picker dialog without escaping, allowing stored cross-site scripting in the Electron renderer. Attackers can create notebooks with HTML payloads in names that execute JavaScript with Node.js access when the picker opens, enabling operating system command execution.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.6High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| siyuan-note | siyuan | v ≤ 3.8.4 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://github.com/siyuan-note/siyuan product
- https://github.com/siyuan-note/siyuan/blob/v3.8.4/app/src/util/mount.ts#L72 technical-description
- https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/file.go#L2446-L2454 technical-description
- https://www.vulncheck.com/advisories/siyuan-through-3.8.4-stored-xss-via-notebook-names third-party-advisory
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8c2m-33v9-vvqm vendor-advisory
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Details
- Published
- 2026-09-19
- Last updated
- 2026-09-22
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.81%
Probability of exploitation in 30 days
57.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')