8

CVE-2026-43001

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Openstack ≫ Keystone Version >= 14.0.0 < 27.0.2
Openstack ≫ Keystone Version >= 28.0.0 < 28.0.2
Openstack ≫ Keystone Version >= 29.0.0 < 29.0.2
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.45% 0.356
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8 1.3 6
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
cve@mitre.org 7.9 1.3 6
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 8 1.3 6
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE-1288 Improper Validation of Consistency within Input

The product receives a complex input with multiple elements or fields that must be consistent with each other, but it does not validate or incorrectly validates that the input is actually consistent.

CWE-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

https://bugs.launchpad.net/keystone/+bug/2149775
Patch
Third Party Advisory
Exploit
Issue Tracking
https://review.opendev.org/c/openstack/keystone/+/985804
Patch
https://security.openstack.org/ossa/OSSA-2026-015.html
Patch
Vendor Advisory
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