{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-02T14:58:03.211","vulnerabilities":[{"cve":{"id":"CVE-2020-15133","sourceIdentifier":"security-advisories@github.com","published":"2020-07-31T18:15:14.473","lastModified":"2024-11-21T05:04:54.867","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In faye-websocket before version 0.11.0, there is a lack of certification validation in TLS handshakes. The `Faye::WebSocket::Client` class uses the `EM::Connection#start_tls` method in EventMachine to implement the TLS handshake whenever a `wss:` URL is used for the connection. This method does not implement certificate verification by default, meaning that it does not check that the server presents a valid and trusted TLS certificate for the expected hostname. That means that any `wss:` connection made using this library is vulnerable to a man-in-the-middle attack, since it does not confirm the identity of the server it is connected to. For further background information on this issue, please see the referenced GitHub Advisory. Upgrading `faye-websocket` to v0.11.0 is recommended."},{"lang":"es","value":"En faye-websocket versiones anteriores a 0.11.0, se presenta una falta de comprobación de certificación en los protocolos de enlaces TLS. La clase \"Faye::WebSocket::Client\" usa el método \"EM::Connection #start_tls\" en EventMachine para implementar el protocolo de enlace TLS cada vez que una URL \"wss:\" es usada para la conexión. Este método no implementa la verificación de certificados por defecto, lo que significa que no comprueba que el servidor presente un certificado TLS válido y confiable para el nombre de host esperado. Eso significa que cualquier conexión \"wss:\" realizada con esta biblioteca es vulnerable a un ataque de tipo man-in-the-middle, ya que no confirma la identidad del servidor al que está conectado. Para obtener más información de fondo sobre este tema, consulte el Aviso de GitHub referenciado. Es recomendado actualizar \"faye-websocket\" a la versión  v0.11.0"}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N","baseScore":8.0,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":1.6,"impactScore":5.8},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","baseScore":8.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":5.8}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:N","baseScore":5.8,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":4.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-295"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-295"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:faye-websocket_project:faye-websocket:*:*:*:*:*:*:*:*","versionEndExcluding":"0.11.0","matchCriteriaId":"6A21B57E-CBCB-44A7-B047-AFD01BAD894F"}]}]}],"references":[{"url":"https://blog.jcoglan.com/2020/07/31/missing-tls-verification-in-faye/","source":"security-advisories@github.com","tags":["Exploit","Third Party Advisory"]},{"url":"https://github.com/faye/faye-websocket-ruby/security/advisories/GHSA-2v5c-755p-p4gv","source":"security-advisories@github.com","tags":["Exploit","Third Party Advisory"]},{"url":"https://blog.jcoglan.com/2020/07/31/missing-tls-verification-in-faye/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"]},{"url":"https://github.com/faye/faye-websocket-ruby/security/advisories/GHSA-2v5c-755p-p4gv","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"]}]}}]}