CVE-2026-43001
An issue was discovered in OpenStack Keystone before 29.0.2. POST /v3/credentials did not validate that the caller-supplied project_id for a
CVSS
7.9
Alto
EPSS
0.5%
p37
KEV
—
Exploit Today
11
0-100
Publicado: 1 may 2026 · Última mod.: 15 jul 2026 · CWE-863 · CWE-1288
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.
- bugs.launchpad.nethttps://bugs.launchpad.net/keystone/+bug/2149775
- review.opendev.orghttps://review.opendev.org/c/openstack/keystone/+/985804
- security.openstack.orghttps://security.openstack.org/ossa/OSSA-2026-015.html
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:39808
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-43001
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2464305
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43001.json