apostrophecms apostrophe up to 3.6.0 os command injection

Summaryinfo

A vulnerability classified as critical was found in apostrophecms apostrophe up to 3.6.0. Impacted is an unknown function. Executing a manipulation can lead to os command injection. The identification of this vulnerability is CVE-2026-42853. The attack can only be executed locally. There is no exploit available.

Detailsinfo

A vulnerability has been found in apostrophecms apostrophe up to 3.6.0 and classified as critical. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

ApostropheCMS is an open-source Node.js content management system. Versions of the @apostrophecms/cli package up to and including 3.6.0 contain a command injection vulnerability in the apos create command. User-supplied input from the password prompt is embedded directly into a shell command without proper sanitization or escaping. This allows execution of arbitrary commands on the host system. As of time of publication, no known patched versions are available.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-42853 since 04/30/2026. The exploitation appears to be easy. The attack needs to be approached locally. Additional levels of successful authentication are needed for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1202.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-36565). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• apostrophecms

Name

• apostrophe

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6.0

Website

• Product: https://github.com/apostrophecms/apostrophe/

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Once again VulDB remains the best source for vulnerability data.

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