CVE-2026-43001

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-43001
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43001.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-43001
Aliases
Downstream
Related
Published
2026-05-01T00:00:00Z
Modified
2026-07-08T08:13:29.150699997Z
Severity
  • 7.9 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L CVSS Calculator
Summary
[none]
Details

An issue was discovered in OpenStack Keystone before 29.0.2. POST /v3/credentials did not validate that the caller-supplied projectid 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 appcred_id, enabling cross-project lateral movement within the credential owner's role footprint.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "14.0.0"
                },
                {
                    "fixed": "27.0.2"
                },
                {
                    "introduced": "28.0.0"
                },
                {
                    "fixed": "28.0.2"
                },
                {
                    "introduced": "29.0.0"
                },
                {
                    "fixed": "29.0.2"
                }
            ]
        },
        {
            "source": "CPE_FIELD",
            "extracted_events": [
                {
                    "introduced": "14.0.0"
                },
                {
                    "fixed": "27.0.2"
                },
                {
                    "introduced": "28.0.0"
                },
                {
                    "fixed": "28.0.2"
                },
                {
                    "introduced": "29.0.0"
                },
                {
                    "fixed": "29.0.2"
                }
            ]
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "fixed": "29.0.2"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43001.json",
    "cna_assigner": "mitre",
    "cwe_ids": [
        "CWE-863"
    ]
}
References

Affected packages

Git / github.com/openstack/keystone

Affected ranges

Type
GIT
Repo
https://github.com/openstack/keystone
Events
Introduced
c767e254979c96858a81cc4bbe8d9773d4dd539b
Fixed
b896b71557ce8370c442fe05818a74d7a9a623a8
Introduced
a568938e0c967a56ade269c93f42718008487b14
Fixed
3dfbbe7b9bd11dcd64420da0e4eda48b637f4a70
Introduced
3526925ae34a66e626bec985628a421a7694168e
Fixed
7b9f39226744b8db50a6d702cc5f715fc9c17f37
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "14.0.0"
        },
        {
            "fixed": "27.0.2"
        },
        {
            "introduced": "28.0.0"
        },
        {
            "fixed": "28.0.2"
        },
        {
            "introduced": "29.0.0"
        },
        {
            "fixed": "29.0.2"
        }
    ]
}

Affected versions

28.*
28.0.0
28.0.0.0rc1
28.0.1
29.*
29.0.0
29.0.0.0rc1
29.0.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43001.json"