What’s Vulnerable › Vulnerabilities

CVE-2026-103762: SiYuan before v3.8.5 Missing Authorization in Save-Path Resolver Endpoints

• Severity: medium (CVSS 5.3 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 2026-10-06
• Weakness: CWE-862

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getShorthandSavePath, and getDocCreateSavePath endpoints that allows read-only publish visitors to learn unpublished notebook box IDs.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.

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-2mrf-mx66-vv6g
• https://www.vulncheck.com/advisories/siyuan-before-3.8.5-missing-authorization-in-save-path-resolver-endpoints
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-2mrf-mx66-vv6g

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