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Vulnerabilities CVE-2026-43001

CVE-2026-43001

High
Open
TLP:CLEAR
NVD CVE.org
Critical Infrastructure Backdoor / C2

AI Analysis

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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.

Details

CVSS Score
7.9
EPSS Score
0.46%

37.5th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L
Confidence
90%
Published
May 1, 2026
Last Modified
Jul 15, 2026
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