CVE-2024-55659Network attack vector

Arbitrary file write via unchecked upload path

Published Dec 11, 2024 · Updated Dec 12, 2024

Path traversal in SiYuan before 3.1.16 allows remote attackers to write arbitrary files through the asset upload API. The Upload handler joins the user-controlled assetsDirPath with the data directory, then creates directories and stores uploaded content without verifying that the resolved path remains inside the workspace. Network access to the endpoint is sufficient for file writes; a written web asset can also execute as stored cross-site scripting when viewed.

CVSS severity8.7
High
EPSS probability0.37%
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 3.1.16 allows remote attackers to write arbitrary files through the asset upload API. The Upload handler joins the user-controlled assetsDirPath with the data directory, then creates directories and stores uploaded content without verifying that the resolved path remains inside the workspace. Network access to the endpoint is sufficient for file writes; a written web asset can also execute as stored cross-site scripting when viewed.

The record

CVE
CVE-2024-55659
Published
Dec 11, 2024
Updated
Dec 12, 2024
Vendor
SiYuan Note
Product
SiYuan
Classifications
CWE-22, CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 12, 2024Record 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=< 3.1.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SiYuan Note · SiYuanversion=< 3.1.16

Published CVSS scores

8.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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