CVE-2026-43001

{"id": "CVE-2026-43001", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.9, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.3}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.0, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.3}]}, "published": "2026-05-01T09:16:17.273", "references": [{"url": "https://bugs.launchpad.net/keystone/+bug/2149775", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory", "Patch"], "source": "cve@mitre.org"}, {"url": "https://review.opendev.org/c/openstack/keystone/+/985804", "tags": ["Patch"], "source": "cve@mitre.org"}, {"url": "https://security.openstack.org/ossa/OSSA-2026-015.html", "tags": ["Vendor Advisory", "Patch"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-06-02T15:20:34.357", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "541F5133-3C0B-4973-BEDC-1A7D4BA292CA", "versionEndExcluding": "27.0.2", "versionStartIncluding": "14.0.0"}, {"criteria": "cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EE1CC117-FDCA-493D-B811-57BC9ADC9260", "versionEndExcluding": "28.0.2", "versionStartIncluding": "28.0.0"}, {"criteria": "cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "594C43ED-BCAE-43C2-9B5F-5D4AF2F2AC08", "versionEndExcluding": "29.0.2", "versionStartIncluding": "29.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}