Arbitrary Code Exec via grub-install in OpenStack iPythonAgent <11.5.0
CVE-2026-43003 Published on May 1, 2026
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.
Vulnerability Analysis
CVE-2026-43003 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Types
Inclusion of Functionality from Untrusted Control Sphere
The software imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.
What is a Shell injection Vulnerability?
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
CVE-2026-43003 has been classified to as a Shell injection vulnerability or weakness.
Products Associated with CVE-2026-43003
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Affected Versions
OpenStack ironic-python-agent:- Before 10.2.3 is affected.
- Version 11.0.0 and below 11.2.1 is affected.
- Version 11.3.0 and below 11.5.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.