CVE-2026-23850: high-severity vulnerability in siyuan-note siyuan
SiYuan vulnerable to arbitrary file read
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.6%
SiYuan is a personal knowledge management system. In versions prior to 3.5.4, the markdown feature allows unrestricted server side html-rendering which allows arbitrary file read (LFD). Version 3.5.4 fixes the issue.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Affected products
siyuan-note · siyuanRelated CVEs — siyuan-note siyuan
In the same product, most dangerous first.
CVE-2026-54069CRITICALSiYuan: Unauthenticated Admin API Access via Blanket chrome-extension:// Origin AllowlistEPSS 7.5%CVE-2026-54068MEDIUMSiYuan: Unauthenticated SQLite Data Exfiltration via Template Injection in /api/icon/getDynamicIconEPSS 4.3%CVE-2026-33476HIGHSiYuan has an Unauthenticated Arbitrary File Read via Path TraversalEPSS 3.3%CVE-2026-54066HIGHSiYuan: Path Traversal via Double URL Encoding in /assets/*path (publish mode arbitrary file─read)EPSS 2.2%CVE-2026-69084CRITICALSiYuan before v3.7.3 SQL Injection via searchEmbedBlockEPSS 1.6%CVE-2026-69085CRITICALSiYuan before v3.7.3 SQL Injection via searchDocsEPSS 1.4%
References
https://github.com/siyuan-note/siyuan/blob/master/kernel/model/file.go#L1035https://github.com/siyuan-note/siyuan/blob/v3.4.2/kernel/api/filetree.go#L799-L886https://github.com/siyuan-note/siyuan/commit/b2274baba2e11c8cf8901b0c5c871e5b27f1f6ddhttps://github.com/siyuan-note/siyuan/commit/f8f4b517077b92c90c0d7b51ac11be1b34b273adhttps://github.com/siyuan-note/siyuan/issues/16860https://github.com/siyuan-note/siyuan/security/advisories/GHSA-cv54-7wv7-qxcw