CVE-2026-59834Public exploitNetwork attack vector

Hidden document disclosure via block-search SQL injection

Published Jul 9, 2026 · Updated Jul 9, 2026

SQL injection in SiYuan before 3.7.1 allows remote attackers to read hidden document content through the publish service. The fullTextSearchBlock path filters interpolate attacker-controlled paths values into SQL, and a UNION SELECT can project an allowed box and path so the post-query access filter accepts a hidden row. Exploitation requires enabled publishing, at least one visible document for the projected identifiers, and hidden content to disclose; authentication and user interaction are not required.

CVSS severity7.5
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in SiYuan before 3.7.1 allows remote attackers to read hidden document content through the publish service. The fullTextSearchBlock path filters interpolate attacker-controlled paths values into SQL, and a UNION SELECT can project an allowed box and path so the post-query access filter accepts a hidden row. Exploitation requires enabled publishing, at least one visible document for the projected identifiers, and hidden content to disclose; authentication and user interaction are not required.

The record

CVE
CVE-2026-59834
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
SiYuan Note
Product
SiYuan
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SiYuan Note · SiYuanversion=< 3.7.1

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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