{"affected":[{"affectedData":[{"product":"secure_headers","vendor":"Twitter","versions":[{"status":"affected","version":"< 3.8.0"},{"status":"affected","version":">= 5.0.0, < 5.1.0"},{"status":"affected","version":">= 6.0.0, < 6.2.0"}]}],"source":"security-advisories@github.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:twitter:secure_headers:*:*:*:*:*:ruby:*:*","matchCriteriaId":"F0F5AB6F-E584-4640-A497-3BC81A4171C8","versionEndExcluding":"3.8.0","vulnerable":true},{"criteria":"cpe:2.3:a:twitter:secure_headers:*:*:*:*:*:ruby:*:*","matchCriteriaId":"B8A7D02A-9E27-4388-A128-14BFCCA049CA","versionEndExcluding":"5.1.0","versionStartIncluding":"5.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:twitter:secure_headers:*:*:*:*:*:ruby:*:*","matchCriteriaId":"D8B75B75-5C9C-4C8D-ACD6-214D042546E7","versionEndExcluding":"6.2.0","versionStartIncluding":"6.0.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"In Secure Headers (RubyGem secure_headers), a directive injection vulnerability is present in versions before 3.8.0, 5.1.0, and 6.2.0. If user-supplied input was passed into append/override_content_security_policy_directives, a semicolon could be injected leading to directive injection. This could be used to e.g. override a script-src directive. Duplicate directives are ignored and the first one wins. The directives in secure_headers are sorted alphabetically so they pretty much all come before script-src. A previously undefined directive would receive a value even if SecureHeaders::OPT_OUT was supplied. The fixed versions will silently convert the semicolons to spaces and emit a deprecation warning when this happens. This will result in innocuous browser console messages if being exploited/accidentally used. In future releases, we will raise application errors resulting in 500s. Depending on what major version you are using, the fixed versions are 6.2.0, 5.1.0, 3.8.0."},{"lang":"es","value":"En Secure Headers (secure_headers de RubyGem), una vulnerabilidad de inyección de directiva está presente en las versiones anteriores a 3.8.0, 5.1.0 y 6.2.0. Si una entrada suministrada por el usuario fue pasada a append/override_content_security_policy_directives, se podría inyectar un punto y coma conllevando a una inyección de directiva. Esto podría ser usado para, por ejemplo anular una directiva script-src. Las directivas duplicadas son ignoradas y la primera gana. Las directivas en secure_headers están ordenadas alfabéticamente, por lo que casi todas van antes de script-src. Una directiva previamente indefinida recibiría un valor inclusive si la función SecureHeaders::OPT_OUT fue suministrada. Las versiones corregidas convertirán silenciosamente los puntos y comas en espacios y emitirán una advertencia de desaprobación cuando esto suceda. Esto resultará en mensajes inocuos de la consola del navegador si está siendo explotada o usada accidentalmente. En futuras versiones, generaremos errores de aplicación resultando en 500. Según la versión principal que esté usando, las versiones corregidas son 6.2.0, 5.1.0, 3.8.0."}],"id":"CVE-2020-5217","lastModified":"2026-06-17T03:21:02.700","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"LOW","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"NONE","baseScore":5.0,"confidentialityImpact":"NONE","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:L/Au:N/C:N/I:P/A:N","version":"2.0"},"exploitabilityScore":10.0,"impactScore":2.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"exploitabilityScore":1.3,"impactScore":2.7,"source":"security-advisories@github.com","type":"Secondary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.8,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","version":"3.1"},"exploitabilityScore":3.9,"impactScore":1.4,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2020-01-23T03:15:10.793","references":[{"source":"security-advisories@github.com","tags":["Patch"],"url":"https://github.com/twitter/secure_headers/commit/936a160e3e9659737a9f9eafce13eea36b5c9fa3"},{"source":"security-advisories@github.com","tags":["Exploit","Third Party Advisory"],"url":"https://github.com/twitter/secure_headers/issues/418"},{"source":"security-advisories@github.com","tags":["Third Party Advisory"],"url":"https://github.com/twitter/secure_headers/pull/421"},{"source":"security-advisories@github.com","tags":["Mitigation","Third Party Advisory"],"url":"https://github.com/twitter/secure_headers/security/advisories/GHSA-xq52-rv6w-397c"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"url":"https://github.com/twitter/secure_headers/commit/936a160e3e9659737a9f9eafce13eea36b5c9fa3"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"],"url":"https://github.com/twitter/secure_headers/issues/418"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://github.com/twitter/secure_headers/pull/421"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mitigation","Third Party Advisory"],"url":"https://github.com/twitter/secure_headers/security/advisories/GHSA-xq52-rv6w-397c"}],"sourceIdentifier":"security-advisories@github.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-95"}],"source":"security-advisories@github.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-74"}],"source":"nvd@nist.gov","type":"Primary"}]}