CVE-2026-42998

{"id": "CVE-2026-42998", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42998", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-28T19:38:16.911205Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.0, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 3.7, "exploitabilityScore": 1.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"vendor": "OpenStack", "product": "Keystone", "versions": [{"status": "affected", "version": "14.0.0", "lessThan": "27.0.2", "versionType": "semver"}, {"status": "affected", "version": "28.0.0", "lessThan": "28.0.2", "versionType": "semver"}, {"status": "affected", "version": "29.0.0", "lessThan": "29.0.2", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-28T19:16:37.483", "references": [{"url": "https://bugs.launchpad.net/keystone/+bug/2148477", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://security.openstack.org/ossa/OSSA-2026-015.html", "tags": ["Patch", "Vendor Advisory"], "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. The Keystone application credential authentication plugin does not verify that the user supplied in the authentication request matches the owner of the application credential. An attacker can authenticate with their own application credential ID and secret while specifying a different user's name and domain in the request body. Keystone issues a token attributed to the victim user. The impersonated token is project-scoped and carries the intersection of the application credential's roles and the victim's actual roles on the project. This enables audit evasion, reading the victim's credentials, and acting as the victim within shared projects."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en OpenStack Keystone antes de la versi\u00f3n 29.0.2. El plugin de autenticaci\u00f3n de credenciales de aplicaci\u00f3n de Keystone no verifica que el usuario proporcionado en la solicitud de autenticaci\u00f3n coincida con el propietario de la credencial de aplicaci\u00f3n. Un atacante puede autenticarse con su propio ID y secreto de credencial de aplicaci\u00f3n mientras especifica el nombre y el dominio de un usuario diferente en el cuerpo de la solicitud. Keystone emite un token atribuido al usuario v\u00edctima. El token suplantado tiene alcance de proyecto y lleva la intersecci\u00f3n de los roles de la credencial de aplicaci\u00f3n y los roles reales de la v\u00edctima en el proyecto. Esto permite la evasi\u00f3n de auditor\u00edas, la lectura de las credenciales de la v\u00edctima y actuar como la v\u00edctima dentro de proyectos compartidos."}], "lastModified": "2026-10-26T13:10:00.140", "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"}