Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-43001

7.9 · HIGH

An issue was discovered in OpenStack Keystone before 29.0.2.

Published May 1, 2026CWE-863EPSS 0.59%

Overview

CVE-2026-43001 is a high-severity vulnerability. It was published on May 1, 2026 and has a CVSS 3.1 base score of 7.9 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.9, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugs.launchpad.net/keystone/+bug/2149775Refreview.opendev.org/c/openstack/keystone/+/985804Refsecurity.openstack.org/ossa/OSSA-2026-015.htmlRefaccess.redhat.com/errata/RHSA-2026:39808Refaccess.redhat.com/errata/RHSA-2026:54757Refaccess.redhat.com/security/cve/CVE-2026-43001Refbugzilla.redhat.com/show_bug.cgi?id=2464305Refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43001.json

How CyberStrike helps

Frequently asked questions

What is CVE-2026-43001?

CVE-2026-43001 is a high-severity vulnerability. It was published on May 1, 2026 and has a CVSS 3.1 base score of 7.9 (HIGH).

How severe is CVE-2026-43001?

This vulnerability has a CVSS 3.1 base score of 7.9, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-43001?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-43001?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-43001 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999