Path Traversal Vulnerability in SiYuan Note by SiYuan
CVE-2026-85583

7.1HIGH

Key Information:

Vendor

Siyuan-note

Status
Siyuan
Vendor
CVE Published:
4 September 2026

What is CVE-2026-85583?

Versions of SiYuan Note before v3.8.2 are susceptible to a path traversal vulnerability that occurs through the reader-accessible file-read endpoint. This flaw enables attackers with reader permissions to exploit symlinks, allowing them to access and request files outside the designated workspace. Consequently, the attackers can retrieve arbitrary files via logical asset paths under data/assets/, circumventing boundary restrictions intended to control file access.

Affected Version(s)

siyuan 0 < 3.8.2

siyuan 3.8.2

References

https://github.com/siyuan-note/siyuan/security/advisories...
vendor-advisory
https://www.vulncheck.com/advisories/siyuan-before-3.8.2-...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.