CVE-2026-43001

high Red Hat
CVSS v3 Base Score
8.0
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS Score
0.0%
Exploitation probability in 30 days
Top 98% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: May 1, 2026 (70 days ago)
Last Modified: May 1, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in OpenStack Keystone. An attacker holding an unrestricted application credential could exploit a vulnerability in the POST /v3/credentials endpoint where the caller-supplied project_id for an EC2-type credential was not validated against the project of the authenticating application credential. This allows the attacker to create an EC2 credential targeting a different project. Subsequently, a /v3/ec2tokens exchange would issue a Keystone token scoped to the targeted project, enabling unauthorized cross-project access and lateral movement within the credential owner's role footprint.

CWE

CWE-1288

Affected Products

Red Hat OpenStack Platform 13 (Queens)Red Hat OpenStack Platform 16.2Red Hat OpenStack Platform 17.1Red Hat OpenStack Platform 18.0

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 bugs.launchpad.net 🔗 review.opendev.org