CVE-2026-7039Public exploit

Root command execution via description newlines

Published Apr 26, 2026 · Updated Apr 26, 2026

Command injection in tufantunc ssh-mcp 1.0 through 1.5.0 allows local users to execute commands through a crafted description. In src/index.ts, exec and sudo-exec append description to a shell command after escaping only number signs, so embedded line breaks reach shell.write as additional commands. Exploitation requires an active su shell configured with --suPassword; injected commands run in that persistent root shell, although the exec tool already accepts arbitrary commands.

CVSS severity7.8
High
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in tufantunc ssh-mcp 1.0 through 1.5.0 allows local users to execute commands through a crafted description. In src/index.ts, exec and sudo-exec append description to a shell command after escaping only number signs, so embedded line breaks reach shell.write as additional commands. Exploitation requires an active su shell configured with --suPassword; injected commands run in that persistent root shell, although the exec tool already accepts arbitrary commands.

The record

CVE
CVE-2026-7039
Published
Apr 26, 2026
Updated
Apr 26, 2026
Vendor
KinoThe-Kafkaesque
Product
SSH MCP Server
Classifications
CWE-74, CWE-77, T1059.004, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 26, 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
  2. Affected versionversion=1.1
  3. Affected versionversion=1.2
  4. Affected versionversion=1.3
  5. Affected versionversion=1.4
  6. Affected versionversion=1.5.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

KinoThe-Kafkaesque · SSH MCP Serverversion=1.0; version=1.1; version=1.2; version=1.3; version=1.4; version=1.5.0

Published CVSS scores

7.8VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
6.8VulDBAV:L/AC:L/Au:S/C:C/I:C/A:C

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Unix Shell
T1068Exploitation for Privilege Escalation

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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