CVE-2026-4198Public exploit

Local command execution via interpolated repository path

Published Mar 15, 2026 · Updated Mar 15, 2026

Command injection in Hypermodel Inc mcp-server-auto-commit 1.0.0 allows local users to execute arbitrary shell commands via autoCommitPath. The getGitChanges function interpolates the user-controlled autoCommitPath value into a cd command passed to child_process.exec, so shell metacharacters become commands. Exploitation requires low-privileged access to invoke the MCP tool and runs commands with the MCP server process's privileges.

CVSS severity5.3
Medium
EPSS probability0.71%
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 Hypermodel Inc mcp-server-auto-commit 1.0.0 allows local users to execute arbitrary shell commands via autoCommitPath. The getGitChanges function interpolates the user-controlled autoCommitPath value into a cd command passed to child_process.exec, so shell metacharacters become commands. Exploitation requires low-privileged access to invoke the MCP tool and runs commands with the MCP server process's privileges.

The record

CVE
CVE-2026-4198
Published
Mar 15, 2026
Updated
Mar 15, 2026
Vendor
Hypermodel Inc
Product
mcp-server-auto-commit
Classifications
CWE-74, CWE-77, T1059
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 15, 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

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Hypermodel Inc · mcp-server-auto-commitversion=1.0.0

Published CVSS scores

4.3VulDBAV:L/AC:L/Au:S/C:P/I:P/A:P
1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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)
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')
T1059Command and Scripting Interpreter

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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