CVEvulnerability

CVE-2026-43001

8.0 HIGH Published 2026-05-01 Modified 2026-10-26 Official page ↗
Status
Modified
Published
2026-05-01
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.9 HIGH — CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L
CVSS 3.1 ([email protected])
8.0 HIGH — CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
8.0 HIGH — CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-1288, CWE-863

Description

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 configurations

• openstack keystone (>= 14.0.0 < 27.0.2) • openstack keystone (>= 28.0.0 < 28.0.2) • openstack keystone (>= 29.0.0 < 29.0.2)

Related

Weakness · CWE (2)

  • CWE-1288 Improper Validation of Consistency within Input weakness
  • CWE-863 Incorrect Authorization weakness

References