What’s Vulnerable › Vulnerabilities

CVE-2026-103763: SiYuan before v3.8.5 Information Disclosure via /api/notebook/getNotebookInfo

• Severity: medium (CVSS 5.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-02 · updated 2026-10-02
• Weakness: CWE-200

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.

Affected products

• siyuan-note siyuan: before 3.8.5 — fixed in 3.8.5

How to fix

Upgrade to a fixed version: siyuan-note siyuan 3.8.5. Check the vendor advisory for mitigations.

References

• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-ccxp-q3vg-jvgj
• https://www.vulncheck.com/advisories/siyuan-before-3.8.5-information-disclosure-via-api-notebook-getnotebookinfo
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-ccxp-q3vg-jvgj

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