{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-17T06:27:52.680","vulnerabilities":[{"cve":{"id":"CVE-2020-5255","sourceIdentifier":"security-advisories@github.com","published":"2020-03-30T20:15:19.570","lastModified":"2024-11-21T05:33:46.550","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In Symfony before versions 4.4.7 and 5.0.7, when a `Response` does not contain a `Content-Type` header, affected versions of Symfony can fallback to the format defined in the `Accept` header of the request, leading to a possible mismatch between the response's content and `Content-Type` header. When the response is cached, this can prevent the use of the website by other users. This has been patched in versions 4.4.7 and 5.0.7."},{"lang":"es","value":"En Symfony en versiones anteriores a las versiones 4.4.7 y 5.0.7, cuando una \"Response\" no contiene un encabezado \"Content-Type\", las versiones afectadas de Symfony pueden retroceder al formato definido en el encabezado \"Accept\" de la petición, conllevando a una posible falta de coincidencia entre el contenido response's y el encabezado \"Content-Type\". Cuando la respuesta es almacenada en caché, esto puede impedir el uso del sitio web por otros usuarios. Esto ha sido parcheado en las versiones 4.4.7 y 5.0.7."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L","baseScore":2.6,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":1.2,"impactScore":1.4},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":2.8,"impactScore":1.4}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P","baseScore":4.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.0,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-435"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-20"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4.0","versionEndExcluding":"4.4.7","matchCriteriaId":"95F04BAB-4B76-4142-B000-67FA0A9F73F4"},{"vulnerable":true,"criteria":"cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0.0","versionEndExcluding":"5.0.7","matchCriteriaId":"A656BCAC-1974-4E5D-B7E3-4162A6153A4B"}]}]}],"references":[{"url":"https://github.com/symfony/symfony/commit/dca343442e6a954f96a2609e7b4e9c21ed6d74e6","source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/symfony/symfony/security/advisories/GHSA-mcx4-f5f5-4859","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ/","source":"security-advisories@github.com"},{"url":"https://symfony.com/blog/cve-2020-5255-prevent-cache-poisoning-via-a-response-content-type-header","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://github.com/symfony/symfony/commit/dca343442e6a954f96a2609e7b4e9c21ed6d74e6","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/symfony/symfony/security/advisories/GHSA-mcx4-f5f5-4859","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://symfony.com/blog/cve-2020-5255-prevent-cache-poisoning-via-a-response-content-type-header","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}