CVE-2026-32938Public exploitNetwork attack vector

Authenticated file disclosure via unchecked file URL copy

Published Mar 20, 2026 · Updated Mar 20, 2026

Path traversal in SiYuan before 3.6.1 allows remote authenticated users to read any local file accessible to the desktop kernel. The /api/lute/html2BlockDOM endpoint copies file:// targets from pasted HTML into workspace assets without checking util.IsSensitivePath, and GET /assets/*path serves the copies. A publish-service visitor needs only normal authentication; exposure is limited to files readable by the SiYuan process.

CVSS severity9.9
Critical
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in SiYuan before 3.6.1 allows remote authenticated users to read any local file accessible to the desktop kernel. The /api/lute/html2BlockDOM endpoint copies file:// targets from pasted HTML into workspace assets without checking util.IsSensitivePath, and GET /assets/*path serves the copies. A publish-service visitor needs only normal authentication; exposure is limited to files readable by the SiYuan process.

The record

CVE
CVE-2026-32938
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
SiYuan Note
Product
SiYuan
Classifications
CWE-200, CWE-284, CWE-22, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 3.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SiYuan Note · SiYuanversion=< 3.6.1

Published CVSS scores

9.9GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:H
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-284Improper Access Control
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

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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