SiyuanApplication · B3log

CVE-2026-32767

CRITICAL · 9.8 CVSS v3.1 Published 2026-03-20
Fix available
A fix is available. Upgrade to 3.6.1 or later.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable No privileges Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
SiYuan is a personal knowledge management system. Versions 3.6.0 and below contain an authorization bypass vulnerability in the /api/search/fullTextSearchBlock endpoint. When the method parameter is set to 2, the endpoint passes user-supplied input directly as a raw SQL statement to the underlying SQLite database without any authorization or read-only checks. This allows any authenticated user — including those with the Reader role — to execute arbitrary SQL statements (SELECT, DELETE, UPDATE, DROP TABLE, etc.) against the application's database. This is inconsistent with the application's own security model: the dedicated SQL endpoint (/api/query/sql) correctly requires both CheckAdminRole and CheckReadonly middleware, but the search endpoint bypasses these controls entirely. This issue has been fixed in version 3.6.1.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

SiYuan versions 3.6.0 and below contain an authorization bypass in /api/search/fullTextSearchBlock where setting the method parameter to 2 passes user input directly as raw SQL to SQLite without CheckAdminRole or CheckReadonly middleware checks, allowing any authenticated user to execute arbitrary SQL statements including DELETE, UPDATE, and DROP TABLE operations.

MitigationUpgrade to SiYuan version 3.6.1 or later, which includes the proper authorization and read-only middleware checks that were missing from the vulnerable endpoint.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
SiyuanApplication
Affected:< 3.6.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify SiYuan installation version
    Check the application version displayed in the SiYuan desktop or web interface, or examine the version information in the installation directory or package metadata
    Affected if the installed version is 3.6.0 or lower (any version below 3.6.1)
  2. Verify the application is running
    Confirm the SiYuan application is active and accessible via its web interface or desktop client
    Affected if the application is running and accepting connections
  3. Confirm authentication is enabled
    Check whether user authentication is configured and active in the SiYuan instance
    Affected if any authenticated user account exists in the system (the vulnerability affects any authenticated user, not just administrators)
  4. Assess network exposure of the API endpoint
    Determine if the /api/search/fullTextSearchBlock endpoint is reachable from the network where attackers could send requests
    Affected if the API endpoint is accessible over the network to authenticated users

You are affected if SiYuan version 3.6.0 or below is running and the application accepts authenticated user connections, since the vulnerable endpoint accepts method=2 to bypass authorization and execute raw SQL.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 3.6.1 or later
Fixed in 3.6.1
Vendor patch github.com →
Interim mitigation

Upgrade to SiYuan version 3.6.1 or later, which includes the proper authorization and read-only middleware checks that were missing from the vulnerable endpoint.

Recommended fix High confidence

3.6.1

  1. Upgrade SiYuan to version 3.6.1 or later from the official release page or package manager
  2. After upgrading, verify that the /api/search/fullTextSearchBlock endpoint no longer accepts method=2 with arbitrary SQL
  3. Confirm the application functions normally after the upgrade

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Siyuan Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing3.0 h
  • Review / QA2.0 h
10.0 hours of engineering $1,750
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.

Scan for this in your stack

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dbcve dependency scanner

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-32767 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data