{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-09T20:24:02.755","vulnerabilities":[{"cve":{"id":"CVE-2026-33173","sourceIdentifier":"security-advisories@github.com","published":"2026-03-24T00:16:28.457","lastModified":"2026-03-24T17:56:09.113","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, `DirectUploadsController` accepts arbitrary metadata from the client and persists it on the blob. Because internal flags like `identified` and `analyzed` are stored in the same metadata hash, a direct-upload client can set these flags to skip MIME detection and analysis. This allows an attacker to upload arbitrary content while claiming a safe `content_type`, bypassing any validations that rely on Active Storage's automatic content type identification. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch."},{"lang":"es","value":"Active Storage permite a los usuarios adjuntar archivos locales y en la nube en aplicaciones Rails. Antes de las versiones 8.1.2.1, 8.0.4.1 y 7.2.3.1, 'DirectUploadsController' acepta metadatos arbitrarios del cliente y los persiste en el blob. Debido a que indicadores internos como 'identified' y 'analyzed' se almacenan en el mismo hash de metadatos, un cliente de carga directa puede establecer estos indicadores para omitir la detección y el análisis MIME. Esto permite a un atacante cargar contenido arbitrario mientras declara un 'content_type' seguro, eludiendo cualquier validación que dependa de la identificación automática del tipo de contenido de Active Storage. Las versiones 8.1.2.1, 8.0.4.1 y 7.2.3.1 contienen un parche."}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-925"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.3.1","matchCriteriaId":"D9DC6CB9-DC6C-4CBB-9806-3936ADBC8F1B"},{"vulnerable":true,"criteria":"cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*","versionStartIncluding":"8.0.0","versionEndExcluding":"8.0.4.1","matchCriteriaId":"FA8791E1-8B96-43F6-A3EC-A7E60D700330"},{"vulnerable":true,"criteria":"cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*","versionStartIncluding":"8.1.0","versionEndExcluding":"8.1.2.1","matchCriteriaId":"978E0135-D14B-41DE-87E4-CF059A23E189"}]}]}],"references":[{"url":"https://github.com/rails/rails/commit/707c0f1f41f067fdf96d54e99d43b28dfaae7e53","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/rails/rails/commit/8fcb934caadc79c8cc4ce53287046d0f67005b3e","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/rails/rails/commit/d9502f5214e2198245a4c1defe9cd02a7c8057d0","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/rails/rails/releases/tag/v7.2.3.1","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/rails/rails/releases/tag/v8.0.4.1","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/rails/rails/releases/tag/v8.1.2.1","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/rails/rails/security/advisories/GHSA-qcfx-2mfw-w4cg","source":"security-advisories@github.com","tags":["Vendor Advisory"]}]}}]}