CVE-2026-103473: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in denoland deno
Deno versions 2.7.0 through 2.9.7 on Windows contain a command injection vulnerability in node:child_process where shell arguments are escaped for the wrong shell type. Attackers can inject OS commands by passing untrusted arguments with the shell option, allowing arbitrary command execution with Deno process privileges.
AI Analysis
Technical Summary
CVE-2026-103473 describes an OS command injection vulnerability in denoland's Deno runtime versions 2.7.0 through 2.9.7 on Windows. The vulnerability is due to improper neutralization of special elements in shell arguments within the node:child_process module, where arguments are escaped for the wrong shell type. This flaw enables attackers to execute arbitrary OS commands by supplying crafted input to the shell option, resulting in command execution with the same privileges as the Deno process.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary operating system commands on a Windows system running affected Deno versions. This can lead to full compromise of the process context, potentially allowing data theft, system manipulation, or further attacks depending on the privileges of the Deno process.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid passing untrusted input to the shell option in node:child_process on affected Deno versions. Monitor official denoland channels for updates and apply patches once released.
CVE-2026-103473: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in denoland deno
Description
Deno versions 2.7.0 through 2.9.7 on Windows contain a command injection vulnerability in node:child_process where shell arguments are escaped for the wrong shell type. Attackers can inject OS commands by passing untrusted arguments with the shell option, allowing arbitrary command execution with Deno process privileges.
CVSS v4.0
Score 9.2critical
Affected software
denoland
deno
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-103473 describes an OS command injection vulnerability in denoland's Deno runtime versions 2.7.0 through 2.9.7 on Windows. The vulnerability is due to improper neutralization of special elements in shell arguments within the node:child_process module, where arguments are escaped for the wrong shell type. This flaw enables attackers to execute arbitrary OS commands by supplying crafted input to the shell option, resulting in command execution with the same privileges as the Deno process.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary operating system commands on a Windows system running affected Deno versions. This can lead to full compromise of the process context, potentially allowing data theft, system manipulation, or further attacks depending on the privileges of the Deno process.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid passing untrusted input to the shell option in node:child_process on affected Deno versions. Monitor official denoland channels for updates and apply patches once released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-30T16:02:59.948Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abe74a8a43b0b3b89bd1dc3
Added to database: 10/01/2026, 14:56:40 UTC
Last enriched: 10/01/2026, 15:01:11 UTC
Last updated: 10/01/2026, 15:36:16 UTC
Views: 5
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