CVE-2025-61489Public exploitNetwork attack vector

Unauthenticated command execution via shell syntax obfuscation

Published Jan 7, 2026 · Updated Jan 7, 2026

Command injection in sonirico mcp-shell 0.3.1 allows remote attackers to execute arbitrary system commands through shell_exec. The shell_exec path checks the raw command with keyword-based validateCommand rules, then passes the same string to bash -c, so substitutions and fragmented command names evade validation. An unauthenticated caller who can reach the MCP tools/call interface can run commands with the server process's privileges.

CVSS severity6.5
Medium
EPSS probability0.98%
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 sonirico mcp-shell 0.3.1 allows remote attackers to execute arbitrary system commands through shell_exec. The shell_exec path checks the raw command with keyword-based validateCommand rules, then passes the same string to bash -c, so substitutions and fragmented command names evade validation. An unauthenticated caller who can reach the MCP tools/call interface can run commands with the server process's privileges.

The record

CVE
CVE-2025-61489
Published
Jan 7, 2026
Updated
Jan 7, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

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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