CVE-2026-59854Public exploitNetwork attack vector

Authenticated credential disclosure via incomplete path denylist

Published Jul 9, 2026 · Updated Jul 9, 2026

Arbitrary file read in SiYuan before 3.7.1 allows remote authenticated users to exfiltrate host credential files through the file API. The globalCopyFiles handler accepts absolute source paths, while IsSensitivePath applies an incomplete prefix denylist that omits common home-directory credential files. Administrator or API-token access is required, and exposed secrets are limited to files readable by the SiYuan kernel account.

CVSS severity4.9
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file read in SiYuan before 3.7.1 allows remote authenticated users to exfiltrate host credential files through the file API. The globalCopyFiles handler accepts absolute source paths, while IsSensitivePath applies an incomplete prefix denylist that omits common home-directory credential files. Administrator or API-token access is required, and exposed secrets are limited to files readable by the SiYuan kernel account.

The record

CVE
CVE-2026-59854
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
SiYuan Note
Product
SiYuan
Classifications
CWE-693, T1552.001, T1005
Attack vector
network
Privileges
admin

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 privilegesadmin

What is affected?

SiYuan Note · SiYuanversion=< 3.7.1

Published CVSS scores

4.9GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-693Protection Mechanism Failure
T1552.001Credentials In Files
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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