Medium severity · published Oct 2, 2026
CVE-2026-103762
SiYuan before v3.8.5 Missing Authorization in Save-Path Resolver Endpoints
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
SiYuan before v3.8.5 contains a missing authorization vulnerability in the getRefCreateSavePath, getShorthandSavePath, and getDocCreateSavePath endpoints that allows read-only publish visitors to learn unpublished notebook box IDs. Attackers with read-only or anonymous publish access can POST any open notebook ID to receive the global save-box ID and save-path template, revealing a hidden notebook's existence and creation time.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SI
siyuan · siyuan-note
before 3.8.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-103762
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103762
vendor-advisory
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-2mrf-mx66-vv6g
third-party-advisory
https://www.vulncheck.com/advisories/siyuan-before-3.8.5-missing-authorization-in-save-path-resolver-endpoints
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