CVE-2026-7599Public exploitNetwork attack vector

Arbitrary file overwrite via unrestricted output path

Published May 1, 2026 · Updated May 1, 2026

Path traversal in Dayoooun hwpx-mcp 0.2.0 allows remote authenticated users to create or overwrite files through its MCP interface. The save_document, export_to_text, and export_to_html handlers pass caller-controlled output_path values to writeFileSync or renameSync without restricting them to a workspace. Access to invoke MCP tools and write permission at the selected path are required; successful exploitation can corrupt configuration or interrupt the service.

CVSS severity6.3
Medium
EPSS probability0.29%
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 Dayoooun hwpx-mcp 0.2.0 allows remote authenticated users to create or overwrite files through its MCP interface. The save_document, export_to_text, and export_to_html handlers pass caller-controlled output_path values to writeFileSync or renameSync without restricting them to a workspace. Access to invoke MCP tools and write permission at the selected path are required; successful exploitation can corrupt configuration or interrupt the service.

The record

CVE
CVE-2026-7599
Published
May 1, 2026
Updated
May 1, 2026
Vendor
Dayoooun
Product
hwpx-mcp
Classifications
CWE-22, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2026CVE publishedPublication date reported by the CVE source.
  2. May 1, 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=0.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Dayoooun · hwpx-mcpversion=0.2.0

Published CVSS scores

6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1565.001Stored Data Manipulation

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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