CVE-2026-2178Public exploitNetwork attack vector

Authenticated command execution via shell-parsed LLDB arguments

Published Feb 8, 2026 · Updated Feb 8, 2026

Command injection in R.Huijts Xcode MCP Server 1.0.3 and earlier allows remote authenticated users to execute host commands via run_lldb. registerXcodeTools passes the tool's untrusted args value to child_process.exec in src/tools/xcode/index.ts, causing a shell to parse metacharacters as additional commands. Access to the MCP endpoint and permission to invoke run_lldb are required; injected commands run with the server process's host privileges.

CVSS severity8.8
High
EPSS probability3.37%
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 R.Huijts Xcode MCP Server 1.0.3 and earlier allows remote authenticated users to execute host commands via run_lldb. registerXcodeTools passes the tool's untrusted args value to child_process.exec in src/tools/xcode/index.ts, causing a shell to parse metacharacters as additional commands. Access to the MCP endpoint and permission to invoke run_lldb are required; injected commands run with the server process's host privileges.

The record

CVE
CVE-2026-2178
Published
Feb 8, 2026
Updated
Feb 8, 2026
Vendor
R.Huijts
Product
Xcode MCP Server
Classifications
CWE-77, CWE-74, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 8, 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=f3419f00117aa9949e326f78cc940166c88f18cb

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

R.Huijts · Xcode MCP Serverversion=f3419f00117aa9949e326f78cc940166c88f18cb

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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