What is CVE-2026-43001?

CVE-2026-43001 is a high-severity vulnerability in Openstack Keystone, classified under Incorrect Authorization. CVSS score: 7.9/10. Published 2026-05-01.

How severe is CVE-2026-43001?

High severity. CVSS v3 base score is 7.9 out of 10.

Auth bypass in Openstack Keystone

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 an EC2-type credential matched the project of the authenticating application credential. This allowe…

Vulnerability class: Broken Access Control

EPSS: 0.000 (4.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.9 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L.

Affected products

Openstack Keystone — versions 14.0.0, 13, 28.0.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

cve@mitre.org (Exploit, Patch, Third Party Advisory, Issue Tracking)
cve@mitre.org (Patch)
cve@mitre.org (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-43001?: CVE-2026-43001 is a high-severity vulnerability in Openstack Keystone, classified under Incorrect Authorization. CVSS score: 7.9/10. Published 2026-05-01.
How severe is CVE-2026-43001?: High severity. CVSS v3 base score is 7.9 out of 10.