django-pyas2 up to 1.2.3 Partner Model pyas2/utils.py os.system cmd_receive/cmd_send os command injection

Summaryinfo

A vulnerability categorized as problematic has been discovered in django-pyas2 up to 1.2.3. Affected by this vulnerability is the function os.system of the file pyas2/utils.py of the component Partner Model. Such manipulation of the argument cmd_receive/cmd_send leads to os command injection. This vulnerability is referenced as CVE-2026-42168. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in django-pyas2 up to 1.2.3 and classified as problematic. Affected by this issue is the function os.system of the file pyas2/utils.py of the component Partner Model. The manipulation of the argument cmd_receive/cmd_send with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

django-pyas2 through 1.2.3 is vulnerable to OS command injection via the cmd_receive and cmd_send fields on the Partner model. These fields are passed directly to os.system() in pyas2/utils.py without sanitization, allowing an authenticated admin user to execute arbitrary commands on the server when an AS2 message is received or sent.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-42168 since 04/24/2026. The exploitation is known to be easy. The attack may be launched remotely. The exploitation requires an enhanced level of successful authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/17/2026). 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.

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Productinfo

Type

• Content Management System

Name

• django-pyas2

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3

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CPE 2.2info

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