CVE-2026-15138Network attack vector

File read and write via path validation bypass

Published Jul 9, 2026 · Updated Jul 9, 2026

Path traversal in tumf MCP Text Editor Server 1.0.0 through 1.0.2 allows remote attackers to read or write files via crafted MCP input. _validate_file_path in mcp_text_editor/text_editor.py rejects paths only when their text contains ".." and does not confine resolved paths to an allowed directory. Successful access requires a user or agent to pass attacker-influenced file_path input, and resulting reads or writes remain limited by server process permissions.

CVSS severity6.3
Medium
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

Path traversal in tumf MCP Text Editor Server 1.0.0 through 1.0.2 allows remote attackers to read or write files via crafted MCP input. _validate_file_path in mcp_text_editor/text_editor.py rejects paths only when their text contains ".." and does not confine resolved paths to an allowed directory. Successful access requires a user or agent to pass attacker-influenced file_path input, and resulting reads or writes remain limited by server process permissions.

The record

CVE
CVE-2026-15138
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
tumf
Product
MCP Text Editor Server
Classifications
CWE-22, T1565.001, T1005
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=1.0.0
  2. Affected versionversion=1.0.1
  3. Affected versionversion=1.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

tumf · MCP Text Editor Serverversion=1.0.0; version=1.0.1; version=1.0.2

Published CVSS scores

6.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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.

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')
T1565.001Stored Data Manipulation
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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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