CVE WatchJul 15, 2026

CVE-2026-43001

An issue was discovered in OpenStack Keystone before 29.0.2. POST /v3/credentials did not validate that the caller-supplied project_id for a

CVSS

7.9

High

EPSS

0.5%

p37

KEV

—

Exploit Today

0-100

Published: May 1, 2026 · Last modified: Jul 15, 2026 · CWE-863 · CWE-1288

EPSS · 30d

0.4%EPSS · 30 days0.5%

2026-06-302026-07-17

Technical 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.

Official references

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