# CVE-2026-123084: Python-pulpcore: pulpcore: header content guard jq filter exposes the content-app environment


- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 10 Nov 2026
- **Updated:** 12 Nov 2026
- **Also known as:** GHSA-mxj6-qp96-8hrw

## What is CVE-2026-123084?

CVE-2026-123084 is a medium-severity vulnerability in Red Hat Ansible Automation Platform 2, published on 10 Nov 2026. 

### Official 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.

Weakness: CWE-917 (Improper Neutralization of Special Elements used in an Expression Language Statement)

## Which versions are affected by CVE-2026-123084?


## How do I fix CVE-2026-123084?

No fix has been published for CVE-2026-123084 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-123084 being exploited?

There is no known exploitation of CVE-2026-123084 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-123084 and fix it if it is affected.

What it is: CVE-2026-123084 is a medium-severity vulnerability in Red Hat Ansible Automation Platform 2, published on 10 Nov 2026. 
Exploitation: There is no known exploitation of CVE-2026-123084 in the wild and no public exploit code.

Affected product: Red Hat Ansible Automation Platform 2. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-123084/ (Markdown: https://insights.sbomify.com/CVE-2026-123084/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-123084
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-123084
- OSV: https://osv.dev/vulnerability/CVE-2026-123084

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-123084/
Summaries are generated and may contain mistakes; the official description above is the record.