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Python-pulpcore: pulpcore: header content guard jq filter exposes the content-app environment

6.5MediumCNA
Exploited
No known exploitation
Fix
No fix listed
Who is exposed
Not reported
Published
Last modified
Reference
Last checked
25/100 · provisional
None on Exploit-DB, Metasploit or GitHub

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.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Read the original 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.

cve.now Index

25Pcve.now Index 25 of 100 · methodology v3 · provisional
  • Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
  • Exposure3/25Reachable over the network · Unknown: No advisory context yet
  • Reach10/20Shipped in major Linux distributions
  • Severity6.5/10CVSS 6.5
  • No patch5/5No patch listed yet

What would change the score

  • Would score about 80 if added to CISA KEV
  • Would score about 75 if CISA's SSVC rates exploitation active
  • Would score about 44 if advisories confirm default setups are exposed

Check your systems with an agent

Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.

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.

Timeline

  1. CVE published
  2. First seen by cve.now

Affected versions

  • 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

Show all 15 packagesShow fewer packages
  • 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

Evidence 4

CVE record · 2

Establishes: The identifier and description.

  1. Record
  2. Record

Write-ups · 1

Establishes: Technical detail and context.

  1. Report

Other links · 1

  1. Link

Corrections

None so far.

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