Medium severity · published Aug 13, 2026
CVE-2026-73605
SiYuan before v3.7.4 Path Traversal via getUniqueFilename
5.8
CVSS
0.3%
EPSS
No
On KEV
Description
SiYuan versions before v3.7.4 contain a path traversal vulnerability in the getUniqueFilename endpoint that allows anonymous readers to probe filesystem existence without validation or confinement. Attackers can supply arbitrary absolute paths to determine whether files and directories exist on the host, enabling reconnaissance of the filesystem layout and installed software.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SI
siyuan · siyuan-note
before 3.7.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-73605
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-73605
github.com
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hf8h-97gm-4x2p
www.vulncheck.com
https://www.vulncheck.com/advisories/siyuan-before-path-traversal-via-getuniquefilename
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