CVE-2026-43003 — ironic-python-agent
HIGHCVE-2026-43003 is a high-severity (CVSS 8) remote code execution vulnerability in ironic-python-agent. A fix is available for ironic-python-agent — see the affected versions and patch details below.
OpenStack Ironic Python Agent Includes Functionality from Untrusted Control Sphere
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-43003.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2026-43003 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,567 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
ironic-python-agentReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
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.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | ironic-python-agent | ≥ 1.0.0&&< 11.6.0 | 11.6.0pip install --upgrade 'ironic-python-agent==11.6.0' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ironic-python-agent, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update ironic-python-agent to 11.6.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-43003 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-43003 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2026-43003. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat OpenShift Container Platform 4.18 | openshift4/ose-ironic-agent-rhel9:1788575439 | RHSA-2026:65852 |
| Red Hat OpenShift Container Platform 4.19 | openshift4/ose-ironic-agent-rhel9:1787545085 | RHSA-2026:60454 |
| Red Hat OpenShift Container Platform 4.20 | openshift4/ose-ironic-agent-rhel9:1787735456 | RHSA-2026:60446 |
| Red Hat OpenShift Container Platform 4.21 | openshift4/ose-ironic-agent-rhel9:1786942282 | RHSA-2026:57801 |
| Red Hat OpenShift Container Platform 4.22 | openshift4/ose-ironic-agent-rhel9:1785883346 | RHSA-2026:51038 |
Frequently Asked Questions
Is CVE-2026-43003 in your dependencies?
O3 Security finds CVE-2026-43003 across PyPI dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.