CVE-2026-43001
7.9 · HIGHOverview
CVE-2026-43001 is a high-severity vulnerability affecting openstack keystone. It was published on May 1, 2026 and has a CVSS 3.1 base score of 7.9 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.9, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
An issue was discovered in OpenStack Keystone before 29.0.2. POST /v3/credentials did not validate that the caller-supplied project_id for an EC2-type credential matched the project of the authenticating application credential. This allowed an attacker holding an unrestricted application credential for project A to create an EC2 credential targeting project B; a subsequent /v3/ec2tokens exchange would then issue a Keystone token scoped to project B while still carrying the original app_cred_id, enabling cross-project lateral movement within the credential owner's role footprint.
Remediation
Check the references section for vendor advisories and patches from openstack. Update keystone to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| openstack | keystone | >= 14.0.0, < 27.0.2 | Affected |
References
Frequently Asked Questions
What is CVE-2026-43001?
CVE-2026-43001 is a high-severity vulnerability affecting openstack keystone. It was published on May 1, 2026 and has a CVSS 3.1 base score of 7.9 (HIGH).
How severe is CVE-2026-43001?
This vulnerability has a CVSS 3.1 base score of 7.9, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-43001?
Check the references section for vendor advisories and patches from openstack. Update keystone to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-43001?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-43001 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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