{"affected":[{"affectedData":[{"product":"Concourse","vendor":"Pivotal","versions":[{"lessThan":"5.2.8","status":"affected","version":"unspecified","versionType":"custom"},{"lessThan":"5.5.10","status":"affected","version":"unspecified","versionType":"custom"},{"lessThan":"5.8.1","status":"affected","version":"unspecified","versionType":"custom"},{"lessThan":"6.0.0","status":"affected","version":"unspecified","versionType":"custom"}]}],"source":"security@pivotal.io"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*","matchCriteriaId":"9B663221-21E6-4138-ABAB-21B2514B59C7","versionEndExcluding":"5.2.8","vulnerable":true},{"criteria":"cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*","matchCriteriaId":"D411C4A8-DF2A-4D58-B1D4-2ACA07C06174","versionEndExcluding":"5.5.10","versionStartIncluding":"5.3.0","vulnerable":true},{"criteria":"cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*","matchCriteriaId":"85DC4DE9-2A70-48BE-9C03-CF7CD8A70D7D","versionEndExcluding":"5.8.1","versionStartIncluding":"5.6.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"Pivotal Concourse, most versions prior to 6.0.0, allows redirects to untrusted websites in its login flow. A remote unauthenticated attacker could convince a user to click on a link using the OAuth redirect link with an untrusted website and gain access to that user's access token in Concourse. (This issue is similar to, but distinct from, CVE-2018-15798.)"},{"lang":"es","value":"En Pivotal Concourse, la mayoría de las versiones anteriores a 6.0.0, permiten redireccionamientos hacia sitios web no confiables en su flujo de inicio de sesión. Un atacante remoto no autenticado podría convencer a un usuario de hacer clic sobre un enlace utilizando el enlace de redireccionamiento OAuth con un sitio web no confiable y conseguir acceso al token de acceso de ese usuario en Concourse. (Este problema es similar pero distinto de CVE-2018-15798)."}],"id":"CVE-2020-5409","lastModified":"2026-06-17T03:21:26.440","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"MEDIUM","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"NONE","baseScore":5.8,"confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:N","version":"2.0"},"exploitabilityScore":8.6,"impactScore":4.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":true}],"cvssMetricV30":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.6,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","version":"3.0"},"exploitabilityScore":2.8,"impactScore":4.7,"source":"security@pivotal.io","type":"Secondary"}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"exploitabilityScore":2.8,"impactScore":2.7,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2020-05-14T00:15:11.603","references":[{"source":"security@pivotal.io","tags":["Vendor Advisory"],"url":"https://tanzu.vmware.com/security/cve-2020-5409"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"url":"https://tanzu.vmware.com/security/cve-2020-5409"}],"sourceIdentifier":"security@pivotal.io","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-601"}],"source":"security@pivotal.io","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-601"}],"source":"nvd@nist.gov","type":"Primary"}]}