Siyuan
CVE-2026-29073
HIGH
GHSA-jqwg-75qf-vmf9
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate as low-privilege user
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ExploitAccess /api/query/sql endpoint
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ExecutionExecute arbitrary SQL query
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ImpactRead/modify/delete database contents
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Parameterized queries, prepared statements
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | SiYuan version prior to 3.6.0 with /api/query/sql endpoint accessible to any logged-in user regardless of role (reader, editor, or admin). Attacker requires valid user account credentials but no admin privileges. |
| Impact | CVSS 8.8 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitation requires authentication. Public exploit/POC available. |
| Exploit ScenarioDerived | An attacker (requires authentication) could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
SQL injection in SiYuan prior to version 3.6.0 allows any authenticated user, including those with read-only access, to execute arbitrary database queries through the /api/query/sql endpoint due to insufficient authorization checks. Public exploit code exists for this vulnerability, enabling attackers to extract sensitive data or modify the knowledge base contents. No patch is currently available for affected versions.
Earlier versions of this analysis (1)
SiYuan is a personal knowledge management system. Prior to version 3.6.0, the /api/query/sql lets a user run sql directly, but it only checks basic auth, not admin rights, any logged-in user, even readers, can run any sql query on the database. [CVSS 8.8 HIGH]
RemediationAI
Fixed in version 3.6.0.. Use parameterized queries. Implement input validation. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in go
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-89 (SQL Injection). Affects Siyuan. SiYuan is a personal knowledge management system. Prior to version 3.6.0, the /api/query/sql lets a user run sql directly, but it only checks basic auth, not admin rights, any logged-in user, even readers, can run any sql query on the database. This issue has been patched in version 3.6.0.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
SiYuan is a personal knowledge management system. Prior to version 3.6.0, the /api/query/sql lets a user run sql directly, but it only checks basic auth, not admin rights, any logged-in user, even readers, can run any sql query on the database. This issue has been patched in version 3.6.0.
Executive ViewAI
SiYuan knowledge management systems are vulnerable to unauthorized database access by any logged-in user, regardless of their permission level. An attacker with basic user credentials can extract, modify, or delete sensitive organizational data stored in the knowledge base, compromising data confidentiality and integrity across the enterprise.
Implement WAF rules to block all requests to /api/query/sql endpoint; restrict network access to SiYuan to authorized IP ranges only; disable SQL query API feature if available in application settings; enforce multi-factor authentication for all SiYuan user accounts; implement database-level read-only permissions for application service accounts; monitor and log all database access attempts; consider air-gapping SiYuan instances containing sensitive data until patch is available.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
SQL injection exploits the way applications construct database queries by mixing user input directly into SQL statements.
Affected Products (CPE)GitHub Advisory
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