Denoland Deno up to 2.9.7 node:child_process os command injection

Summaryinfo

A vulnerability identified as critical has been detected in Denoland Deno up to 2.9.7. Affected is an unknown function of the component node:child_process. Performing a manipulation results in os command injection. This vulnerability was named CVE-2026-103473. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Denoland Deno up to 2.9.7. It has been classified as critical. This affects some unknown functionality of the component node:child_process. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-103473 since 09/30/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/30/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Denoland

Name

• Deno

Version

• 2.9.0
• 2.9.1
• 2.9.2
• 2.9.3
• 2.9.4
• 2.9.5
• 2.9.6
• 2.9.7

Website

• Product: https://github.com/denoland/deno/

CPE 2.3info

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CPE 2.2info

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