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High, CVSS 8.0amended

OpenStack Ironic Python Agent Includes Functionality from Untrusted Control Sphere

CVE-2026-43003GHSA-rmxr-45gj-889w

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (ironic-python-agent 11.6.0), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
8.0 · CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS
  • CVE-2026-43003: 0.98% estimated exploitation activity in the next 30 days; percentile 62.35 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

An issue was discovered in OpenStack ironic-python-agent 1.0.0 through 11.5.0. Ironic Python Agent (IPA) sometimes executes grub-install from within a chroot of the deployed partition image, leading to code execution in the case of a malicious image.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-rmxr-45gj-889w

  2. Revision 1 · created ·

    Published from osv record GHSA-rmxr-45gj-889w

Agent brief

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# Patch Next advisory brief: CVE-2026-43003

Advisory: OpenStack Ironic Python Agent Includes Functionality from Untrusted Control Sphere
IDs: CVE-2026-43003, GHSA-rmxr-45gj-889w
Record: https://patchnext.com/advisories/cve-2026-43003 (revision 2, source checked 26 Oct 2026, 13:51 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.0)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: ironic-python-agent 11.6.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI ironic-python-agent: affected >= 1.0.0, <= 11.5.0; fixed in 11.6.0

## Suggested inspection (read-only)
- `python -m pip show ironic-python-agent`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on ironic-python-agent.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-rmxr-45gj-889w (OSV record GHSA-rmxr-45gj-889w lists affected ranges: PyPI ironic-python-agent >=1.0.0 <11.6.0 (fixed))
- Verified: https://github.com/advisories/GHSA-rmxr-45gj-889w (GitHub-reviewed advisory GHSA-rmxr-45gj-889w lists affected ranges: PyPI ironic-python-agent >=1.0.0 <=11.5.0)

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