CVE-2026-33658

{"id": "CVE-2026-33658", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33658", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-30T11:42:16.532847Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 2.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "LOW", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/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", "exploitMaturity": "UNREPORTED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "rails", "product": "activestorage", "versions": [{"status": "affected", "version": ">= 8.1.0, < 8.1.2.1"}, {"status": "affected", "version": ">= 8.0.0, < 8.0.4.1"}, {"status": "affected", "version": "< 7.2.3.1"}]}]}], "published": "2026-03-26T22:16:29.387", "references": [{"url": "https://github.com/rails/rails/releases/tag/v7.2.3.1", "tags": ["Product", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/rails/rails/releases/tag/v8.0.4.1", "tags": ["Product", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/rails/rails/releases/tag/v8.1.2.1", "tags": ["Product", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/rails/rails/security/advisories/GHSA-p9fm-f462-ggrg", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2026-33658.yml", "tags": ["Third Party Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-770"}]}], "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\nActive Storage's proxy controller does not limit the number of byte ranges in an HTTP Range header. A request with thousands of small ranges causes disproportionate CPU usage compared to a normal request for the same file, possibly resulting in a DoS vulnerability. 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 en la nube y locales en aplicaciones Rails. Antes de las versiones 8.1.2.1, 8.0.4.1 y 7.2.3.1, el controlador proxy de Active Storage no limita el n\u00famero de rangos de bytes en un encabezado HTTP Range. Una solicitud con miles de rangos peque\u00f1os causa un uso desproporcionado de la CPU en comparaci\u00f3n con una solicitud normal para el mismo archivo, lo que posiblemente resulte en una vulnerabilidad de DoS. Las versiones 8.1.2.1, 8.0.4.1 y 7.2.3.1 contienen un parche."}], "lastModified": "2026-06-17T10:37:52.553", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D9DC6CB9-DC6C-4CBB-9806-3936ADBC8F1B", "versionEndExcluding": "7.2.3.1"}, {"criteria": "cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA8791E1-8B96-43F6-A3EC-A7E60D700330", "versionEndExcluding": "8.0.4.1", "versionStartIncluding": "8.0.0"}, {"criteria": "cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "978E0135-D14B-41DE-87E4-CF059A23E189", "versionEndExcluding": "8.1.2.1", "versionStartIncluding": "8.1.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}