CVE-2026-43003 OpenStack Ironic Python Agent Includes Functionality from Untrusted Control Sphere
Attackers can execute arbitrary code by providing a malicious partition image to OpenStack Ironic Python Agent during deployment.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-43003?
CVE-2026-43003 is a high-severity command injection vulnerability in OpenStack ironic-python-agent, published on 1 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-43003?
3 open source packages ship an affected version, including ironic-python-agent. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ironic-python-agent PyPI | From 1.0.0 | 11.6.0 |
ironic-python-agent PyPI | From 1.0.0 | 11.6.0 |
ironic-python-agent PyPI | From 1.0.0 | 11.6.0 |
Products include Openstack Ironic Python Agent.
How do I fix CVE-2026-43003?
Upgrade ironic-python-agent to 11.6.0 or later.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-43003 being exploited?
There is no known exploitation of CVE-2026-43003 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-43003, GHSA-rmxr-45gj-889w, PYSEC-2026-205, UBUNTU-CVE-2026-43003.