Medium severity · published Oct 2, 2026
CVE-2026-103763
SiYuan before v3.8.5 Information Disclosure via /api/notebook/getNotebookInfo
5.8
CVSS
0.3%
EPSS
No
On KEV
Description
SiYuan before v3.8.5 contains an information disclosure vulnerability that allows read-only publish readers to learn metadata of publish-excluded documents through the getNotebookInfo endpoint. Attackers, including anonymous visitors when no reader password is set, can query publish-visible notebooks to obtain document count, size and modification timestamps of hidden documents.
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 24% 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-2026-103763
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103763
vendor-advisory
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-ccxp-q3vg-jvgj
third-party-advisory
https://www.vulncheck.com/advisories/siyuan-before-3.8.5-information-disclosure-via-api-notebook-getnotebookinfo
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