{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-28T18:34:07.586","vulnerabilities":[{"cve":{"id":"CVE-2021-29479","sourceIdentifier":"security-advisories@github.com","published":"2021-06-29T15:15:18.870","lastModified":"2026-06-17T03:47:43.630","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Ratpack is a toolkit for creating web applications. In versions prior to 1.9.0, a user supplied `X-Forwarded-Host` header can be used to perform cache poisoning of a cache fronting a Ratpack server if the cache key does not include the `X-Forwarded-Host` header as a cache key. Users are only vulnerable if they do not configure a custom `PublicAddress` instance. For versions prior to 1.9.0, by default, Ratpack utilizes an inferring version of `PublicAddress` which is vulnerable. This can be used to perform redirect cache poisoning where an attacker can force a cached redirect to redirect to their site instead of the intended redirect location. The vulnerability was patched in Ratpack 1.9.0. As a workaround, ensure that `ServerConfigBuilder::publicAddress` correctly configures the server in production."},{"lang":"es","value":"Ratpack es un kit de herramientas para crear aplicaciones web. En versiones anteriores a 1.9.0, una cabecera \"X-Forwarded-Host\" suministrada por el usuario puede ser usada para llevar a cabo el envenenamiento de la caché de un servidor Ratpack si la clave de la caché no incluye la cabecera \"X-Forwarded-Host\" como clave de la caché. Unos usuarios sólo son vulnerables si no configuran una instancia personalizada de \"PublicAddress\". Para versiones anteriores a 1.9.0, por defecto, Ratpack usa una versión inferida de \"PublicAddress\" que es vulnerable. Esto puede ser usado para llevar a cabo el envenenamiento de la caché de redireccionamiento, donde un atacante puede forzar un redireccionamiento en caché para redirigir a su sitio en lugar de la ubicación de redireccionamiento prevista. La vulnerabilidad fue parcheada en Ratpack versión 1.9.0. Como solución, asegúrese de que \"ServerConfigBuilder::publicAddress\" configura correctamente el servidor en producción"}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"ratpack","product":"ratpack","versions":[{"version":"< 1.9.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L","baseScore":7.0,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"HIGH","availabilityImpact":"LOW"},"exploitabilityScore":2.2,"impactScore":4.7},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.7}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:H/Au:N/C:P/I:P/A:N","baseScore":4.0,"accessVector":"NETWORK","accessComplexity":"HIGH","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":4.9,"impactScore":4.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-807"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-Other"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ratpack_project:ratpack:*:*:*:*:*:*:*:*","versionEndExcluding":"1.9.0","matchCriteriaId":"E972830A-9822-4DD9-BB64-9CC2B69018D5"}]}]}],"references":[{"url":"https://github.com/ratpack/ratpack/security/advisories/GHSA-w6rq-6h34-vh7q","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://portswigger.net/web-security/web-cache-poisoning","source":"security-advisories@github.com","tags":["Exploit","Third Party Advisory"]},{"url":"https://github.com/ratpack/ratpack/security/advisories/GHSA-w6rq-6h34-vh7q","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://portswigger.net/web-security/web-cache-poisoning","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"]}]}}]}