CVE-2026-43001
HIGH
MEDIUM
Priority: 0.04
BB Relevance:
51/100
Published: 2026-05-01
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Network
No Interaction
Conf. Impact
Integ. Impact
Scope Change
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
High
UI:
None
S:
Changed
C:
High
I:
High
A:
High
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 Software (3)
References & Advisories (8)
Patch
Vendor Advisory
Patch
Exploit
Issue Tracking
Patch