CVE-2026-92986SiYuan before 3.8.4 Cross-Site Scripting via Document Title
Updated under an hour ago ()
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It affects siyuan-note siyuan. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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SiYuan before 3.8.4 renders document titles as HTML in the backlink dock tree without escaping markup characters. Attackers can set malicious titles through the rename API or crafted notebooks to execute scripts in the Electron renderer with access to child_process for command execution.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
siyuan-note siyuan siyuan_note:siyuan (from the name) | before 3.8.4 | CNA record |
References
- https://github.com/siyuan-note/siyuan/commit/6f093ebe50afc503e2a8b056164293054f8509e7patch
- https://github.com/siyuan-note/siyuanproduct
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-c5h9-g2c6-fxjwvendor-advisory
- https://github.com/siyuan-note/siyuan/blob/v3.8.3/app/src/util/Tree.ts#L134technical-description
- https://www.vulncheck.com/advisories/siyuan-before-3.8.4-cross-site-scripting-via-document-titlethird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.