CVE-2026-43001
HIGH WAF: Low
CVSS 8.0
Published: 2026-05-01
CWE-863
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.
WAF Coverage Analysis
Incorrect Authorization
Low WAF Coverage
OWASP: A01:2021 Broken Access Control
Affected Software
| Vendor | Product | Version |
|---|---|---|
| openstack | keystone | 14.0.0 - 27.0.2 |
| openstack | keystone | 28.0.0 - 28.0.2 |
| openstack | keystone | 29.0.0 - 29.0.2 |
References
- bugs.launchpad.net (Exploit, Issue Tracking, Third Party Advisory, Patch)
- review.opendev.org (Patch)
- security.openstack.org (Vendor Advisory, Patch)