---
id: "CVE-2026-73609"
kind: "vulnerability"
aliases: ["CVE-2026-73609", "GHSA-j4ph-9xwf-wcj4", "GO-2026-6634"]
title: "SiYuan: getBookmarkLabels returns every bookmark label in the workspace to anonymous readers, with no publish-access filtering in github.com/siyuan-note/siyuan/kernel"
severity: "medium"
cvss: 6.9
epss: 0.00325
exploited: false
status: "open"
category: "package"
products: [{"name": "github.com/siyuan-note/siyuan/kernel", "fixed": ["0.0.0-20260812083335-251596fc0de2"], "affected": "< 0.0.0-20260812083335-251596fc0de2", "ecosystem": "go"}]
ecosystems: ["go"]
tags: ["go", "package", "self-hosted", "siyuan"]
not_affected_if: ["managed-hosting", "publish-mode-disabled", "version-3.7.4-or-later"]
published_at: "2026-08-13T12:17:25+00:00"
first_seen_at: "2026-10-23T19:13:08+00:00"
updated_at: "2026-10-23T21:45:58+00:00"
sources: [{"source": "govuln", "url": "https://pkg.go.dev/vuln/GO-2026-6634", "first_seen_at": "2026-10-23T19:13:08+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-73609", "first_seen_at": "2026-10-23T19:13:43+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73609", "first_seen_at": "2026-10-23T19:35:23+00:00"}]
---

# SiYuan: getBookmarkLabels returns every bookmark label in the workspace to anonymous readers, with no publish-access filtering in github.com/siyuan-note/siyuan/kernel

SiYuan's getBookmarkLabels endpoint returns every bookmark label in the workspace, ignoring publish-access limits. An anonymous or publish-mode reader can read the full bookmark vocabulary, which reveals topics and organizational details from documents they cannot open.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- go:github.com/siyuan-note/siyuan/kernel affected < 0.0.0-20260812083335-251596fc0de2 fixed 0.0.0-20260812083335-251596fc0de2

## Fix

Upgrade the github.com/siyuan-note/siyuan/kernel module to 0.0.0-20260812083335-251596fc0de2 or later (SiYuan v3.7.4 or later per the advisory).

## Timeline

- 2026-10-23T19:13:08+00:00 govuln https://pkg.go.dev/vuln/GO-2026-6634
- 2026-10-23T19:13:43+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-73609
- 2026-10-23T19:35:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-73609

## From the sources

SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the getBookmarkLabels endpoint that returns all bookmark labels in the workspace without publish-access filtering. Anonymous readers and publish-mode readers can obtain the complete bookmark vocabulary across the workspace, disclosing subject matter and organizational information from inaccessible documents.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_