Which versions of Mcp Code Executor are affected by CVE-2026-4199?

Organizations using bazinga012 mcp_code_executor should be aware of moderate risk from CVE-2026-4199, a command injection vulnerability rated CVSS 5.3.. A patch is available.

Is there a public PoC exploit available for CVE-2026-4199?

Yes, a public proof-of-concept exploit is available for CVE-2026-4199. Prioritise patching immediately. EPSS: 0.2%.

Mcp Code Executor CVE-2026-4199

Q: What is the CVSS score of CVE-2026-4199?

CVE-2026-4199 has a CVSS 4.0 base score of 1.9 (Low). CVSS vector: CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.2%.

EUVD-2026-12269 LOW

Command Injection (CWE-77)

2026-03-16 VulDB

Command Injection Mcp Code Executor

1.9

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

1.9 LOW

CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

4.8 (MEDIUM) 1.9 (LOW)

CVSS changed

Apr 22, 2026 - 21:37 NVD

5.3 (MEDIUM) 4.8 (MEDIUM)

PoC Detected

Mar 16, 2026 - 14:53 vuln.today

Public exploit code

EUVD ID Assigned

Mar 16, 2026 - 01:00 euvd

EUVD-2026-12269

Analysis Generated

Mar 16, 2026 - 01:00 vuln.today

Patch released

Mar 16, 2026 - 01:00 nvd

Patch available

CVE Published

Mar 16, 2026 - 00:02 nvd

MEDIUM 5.3

DescriptionCVE.org

A vulnerability was identified in bazinga012 mcp_code_executor up to 0.3.0. Affected by this issue is the function installDependencies of the file src/index.ts. Such manipulation leads to command injection. The attack can only be performed from a local environment. The exploit is publicly available and might be used. It is best practice to apply a patch to resolve this issue. The project was informed of the problem early through an issue report but has not responded yet.

AnalysisAI

Command injection in bazinga012 mcp_code_executor up to version 0.3.0 allows local attackers with user-level privileges to execute arbitrary commands through the installDependencies function in src/index.ts. Public exploit code exists for this vulnerability, affecting Python and Node.js environments. …

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Vulnerability AssessmentAI

Risk Assessment	While the CVSS 3.1 score of 5.3 indicates medium severity with low attack complexity and low privilege requirements, the real-world risk profile requires nuanced assessment. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A developer with local system access runs the mcp_code_executor tool and supplies a maliciously crafted package name to the installDependencies function—for example, a name containing shell metacharacters such as 'package; rm -rf /' or backticks executing arbitrary commands. Because the function does not properly escape or parameterize the input before executing shell commands, the injected commands execute with the privilege level of the process running the tool. …
Remediation	Immediately cease usage of mcp_code_executor versions 0.3.0 and earlier until a patched version is released. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems running bazinga012 mcp_code_executor and apply vendor patches as part of regular patch cycle. …

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CVE-2026-4199 vulnerability details – vuln.today

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