SiYuan before v3.8.4 Path Traversal via exportBrowserHTML folder
SiYuan versions before v3.8.4 contain a path traversal vulnerability in the exportBrowserHTML endpoint that allows authenticated administrators to write arbitrary HTML content to index.html outside the workspace directory. Attackers can supply a folder parameter with directory traversal sequences to escape the export directory and overwrite index.html in any pre-existing kernel-writable location, enabling stored XSS or workspace defacement.
CVE-2026-100636
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-100636
siyuan
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "siyuan-note",
"product": "siyuan",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "3.8.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "3.8.4",
"versionType": "semver"
}
],
"packageURL": "pkg:golang/github.com/siyuan-note/siyuan",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-100636
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #3224 · Revision 1
- Added to Heist Feed
- Publisher date