All vulnerabilities
CVE-2026-103762GHSA-2mrf-mx66-vv6g

SiYuan before v3.8.5 Missing Authorization in Save-Path Resolver Endpoints

siyuan-note siyuan
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 6 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.24%Chance of exploitation activity in the next 30 days, higher than 13% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3.8.5Fixed versionCVE List
Published2 Oct 2026Updated 6 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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getShorthandSavePath, and getDocCreateSavePath endpoints that allows read-only publish visitors to learn unpublished notebook box IDs.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

Text from CVE List

Affected versions 2

  • siyuanaffected: all versions before 3.8.5CVE List
  • siyuanunaffected: 3.8.5CVE List

References 2