CVE-2026-43001_CVE-2026-43001

7.9 / 10

HIGH

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L

Description

An issue was discovered in OpenStack Keystone 13 through 29. 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.

Basic Information

ID CVE-2026-43001

Source mitre

Published May 1, 2026 at 00:00

Modified May 1, 2026 at 07:53

Affected Product

Vendor OpenStack

Product Keystone

Version 13

Affected Versions OpenStack Keystone 13

CWE Classification

CWE-863

References

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    "lastseen": "",
    "description": "An issue was discovered in OpenStack Keystone 13 through 29. 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.",
    "published": "2026-05-01T00:00:00.000Z",
    "modified": "2026-05-01T07:53:34.311Z",
    "type": "cve",
    "title": "CVE-2026-43001",
    "source": "mitre",
    "references": "https://bugs.launchpad.net/keystone/+bug/2149775\nhttps://review.opendev.org/c/openstack/keystone/+/985804",
    "id": "CVE-2026-43001",
    "bulletinFamily": "",
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    "cvelist": null,
    "sourceData": "OpenStack Keystone 13",
    "sourceHref": "",
    "cvss": {
        "score": 7.9,
        "severity": "HIGH",
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        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
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        "privilegesRequired": "",
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        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    "href": "",
    "category_name": "CVE",
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    "product": "Keystone",
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}