Red Hat Ansible Automation Platform HeaderContentGuard publication.py HeaderContentGuard.permit code injection

Summaryinfo

A vulnerability was found in Red Hat Ansible Automation Platform, Satellite and Update Infrastructure. It has been declared as critical. This affects the function HeaderContentGuard.permit of the file publication.py of the component HeaderContentGuard. The manipulation results in code injection. This vulnerability was named CVE-2026-123084. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Red Hat Ansible Automation Platform, Satellite and Update Infrastructure (version now known). Affected is the function HeaderContentGuard.permit of the file publication.py of the component HeaderContentGuard. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An **expression language injection** has been found in the HeaderContentGuard.permit function in publication.py of the content guard in the **Pulpcore** package. The guard is supposed to check a value in a request header. It saves a jq filter and runs that filter against the header when a client asks for content. The filter is not limited to the header, and jq's env builtin also returns the environment of the content process. A low-privileged network attacker or user who can create a header content guard and attach it to a distribution can save a filter that reads that environment. The content request is allowed or denied according to the filter result. Repeating the request lets that attacker or user recover the environment, including Pulp settings held there, such as the Django secret key or the database password.

The advisory is shared for download at access.redhat.com. This vulnerability is traded as CVE-2026-123084 since 11/05/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 11/10/2026). The MITRE ATT&CK project declares the attack technique as T1059.

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

• Automation Software

Vendor

• Red Hat

Name

• Ansible Automation Platform
• Satellite
• Update Infrastructure

License

• open-source

Website

• Vendor: https://www.redhat.com/

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