high7.9
CVE-2026-43001
An issue was discovered in OpenStack Keystone before 29.0.2.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | keystone | >= 13.0.0, <= 29.0.1 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openstack | Keystone | from 14.0.0 before 27.0.2 from 28.0.0 before 28.0.2 from 29.0.0 before 29.0.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-hhq2-3832-xxcv
- https://nvd.nist.gov/vuln/detail/CVE-2026-43001
- https://bugs.launchpad.net/keystone/+bug/2149775
- https://review.opendev.org/c/openstack/keystone/+/985804
- https://security.openstack.org/ossa/OSSA-2026-015.html
- https://access.redhat.com/errata/RHSA-2026:39808
- https://access.redhat.com/errata/RHSA-2026:54757
- https://access.redhat.com/security/cve/CVE-2026-43001
- https://bugzilla.redhat.com/show_bug.cgi?id=2464305
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43001.json