Description
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.
Published: 2026-11-10
Score: 6.5 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.

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History

Tue, 10 Nov 2026 22:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Python-pulpcore: pulpcore: header content guard jq filter exposes the content-app environment
First Time appeared Redhat
Redhat ansible Automation Platform
Redhat rhui
Redhat satellite
Weaknesses CWE-917
CPEs cpe:/a:redhat:ansible_automation_platform:2
cpe:/a:redhat:rhui:4::el8
cpe:/a:redhat:rhui:5::el9
cpe:/a:redhat:satellite:6
Vendors & Products Redhat
Redhat ansible Automation Platform
Redhat rhui
Redhat satellite
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}


Subscriptions

Redhat Ansible Automation Platform Rhui Satellite
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-11-10T22:12:16.251Z

Reserved: 2026-11-05T11:28:34.869Z

Link: CVE-2026-123084

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-917

    Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')