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Advisory record · GHSA-53fp-9jmv-227g

SiYuan: Outline state for any document, including documents forbidden to readers, is returned by /api/storage/getOutlineStorage with no access check

CVSS 6.9 MediumEPSS 0.0025 · 16th percentile

Published by the GitHub Advisory Database at 1 Oct 2026, 15:44 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/siyuan-note/siyuan/kernelGo<0.0.0-20260812083335-251596fc0de20.0.0-20260812083335-251596fc0de2
Identifiers
GHSA-53fp-9jmv-227g · CVE-2026-73607 · GO-2026-6624
Weakness (CWE)
CWE-862
Tags
Published
1 Oct 2026
Updated
7 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

SiYuan's kernel (github.com/siyuan-note/siyuan/kernel) is affected in versions before 0.0.0-20260812083335-251596fc0de2, and the fixed version is 0.0.0-20260812083335-251596fc0de2. The /api/storage/getOutlineStorage endpoint has no authorization check, so an anonymous reader in publish mode, or any publish reader role, can request outline state for any document by identifier, including documents otherwise withheld. The exposed data is heading block identifiers and whether an outline entry exists, but not document text. Upgrade to the fixed version; no other workaround is listed.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.9 Medium 4.0 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 CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0025, the 16th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:12 UTC First seen by agentprime
  2. 31 Oct 2026, 14:12 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.