CVE-2026-103763

SiYuan before v3.8.5 Information Disclosure via /api/notebook/getNotebookInfo

State: Published
Severity: 6.9 Medium
Published: Oct 2, 2026
Updated: Oct 2, 2026
Reserved: Oct 1, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N	VulnCheck
3.1	5.8 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N	VulnCheck

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
siyuansiyuan-note	before 3.8.5Affected 3.8.5Not affected

References

GitHub Security Advisory (GHSA-ccxp-q3vg-jvgj)vendor-advisory
VulnCheck Advisory: SiYuan before v3.8.5 Information Disclosure via /api/notebook/getNotebookInfothird-party-advisory

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