CVE-2026-100638SiYuan before v3.8.4 Path Traversal via setNotebookIcon
Updated under an hour ago ()
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EPSS puts the chance of exploitation in the next 30 days at 0.47%, higher than 39% of scored CVEs.
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SiYuan versions before v3.8.4 contain a path traversal vulnerability in the setNotebookIcon endpoint that allows authenticated administrators to create arbitrary directory trees and write files outside the workspace boundary. Attackers can supply directory traversal sequences in the notebook parameter to escape the workspace data directory and write conf.json files to arbitrary locations accessible by the kernel process.
- CVSS
- 7.6 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:L
- Weakness (CWE)
- CWE-73
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.47% (percentile 39)
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
siyuan-note siyuan siyuan_note:siyuan (from the name) | before 3.8.4; 3.8.4 not affected | CNA record |
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-6h8x-6mph-7438vendor-advisory
- https://www.vulncheck.com/advisories/siyuan-before-3.8.4-path-traversal-via-setnotebookiconthird-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.