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

This month

HIGH 8.0UPGRADE

CVE-2026-43003 is a high-severity flaw (CVSS 8.0) affecting ironic python agent. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.0 (High)
Attack vector	Adjacent network
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-829, CWE-78
Published	2026-05-01
Last modified	2026-10-26

Publisher (CNA): MITRE · Vendor: openstack

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-01 09:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

openstack ironic python agent UPGRADE

Affected: >= 1.0.0 and <= 11.5.0

Fixed in: newer than 11.5.0

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy ironic-python-agent || rpm -q ironic-python-agent || ironic-python-agent --version

2. UPGRADE to newer than 11.5.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ironic-python-agent

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ironic-python-agent

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison ironic-python-agent sudo apt install ironic-python-agent=<VERSION_BEFORE_1.0.0> sudo apt-mark hold ironic-python-agent

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ironic-python-agent sudo dnf downgrade ironic-python-agent-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add ironic-python-agent

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-43003?

ironic python agent: upgrade to newer than 11.5.0. Exact commands for each OS are on this page.

Is CVE-2026-43003 being exploited?

CVE-2026-43003 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-43003 affect?

CVE-2026-43003 affects ironic python agent. Severity is high (CVSS 8.0). 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 malici

How urgent is CVE-2026-43003?

Priority 44/100. High severity

Software pages

Python vulnerabilities · OpenStack vulnerabilities

References

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