CVE-2026-33173

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33173", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-17T22:16:36.719Z", "datePublished": "2026-03-23T23:21:29.843Z", "dateUpdated": "2026-03-24T15:12:50.569Z"}, "containers": {"cna": {"title": "Rails Active Storage has possible content type bypass via metadata in direct uploads", "problemTypes": [{"descriptions": [{"cweId": "CWE-925", "lang": "en", "description": "CWE-925: Improper Verification of Intent by Broadcast Receiver", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "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", "version": "4.0"}}], "references": [{"name": "https://github.com/rails/rails/security/advisories/GHSA-qcfx-2mfw-w4cg", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/rails/rails/security/advisories/GHSA-qcfx-2mfw-w4cg"}, {"name": "https://github.com/rails/rails/commit/707c0f1f41f067fdf96d54e99d43b28dfaae7e53", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/commit/707c0f1f41f067fdf96d54e99d43b28dfaae7e53"}, {"name": "https://github.com/rails/rails/commit/8fcb934caadc79c8cc4ce53287046d0f67005b3e", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/commit/8fcb934caadc79c8cc4ce53287046d0f67005b3e"}, {"name": "https://github.com/rails/rails/commit/d9502f5214e2198245a4c1defe9cd02a7c8057d0", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/commit/d9502f5214e2198245a4c1defe9cd02a7c8057d0"}, {"name": "https://github.com/rails/rails/releases/tag/v7.2.3.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/releases/tag/v7.2.3.1"}, {"name": "https://github.com/rails/rails/releases/tag/v8.0.4.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/releases/tag/v8.0.4.1"}, {"name": "https://github.com/rails/rails/releases/tag/v8.1.2.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/releases/tag/v8.1.2.1"}], "affected": [{"vendor": "rails", "product": "activestorage", "versions": [{"version": ">= 8.1.0.beta1, < 8.1.2.1", "status": "affected"}, {"version": ">= 8.0.0.beta1, < 8.0.4.1", "status": "affected"}, {"version": "< 7.2.3.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-23T23:21:29.843Z"}, "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."}], "source": {"advisory": "GHSA-qcfx-2mfw-w4cg", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-24T14:14:22.499615Z", "id": "CVE-2026-33173", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-24T15:12:50.569Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-33173", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-24T14:14:22.499615Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-24T14:14:26.157Z"}}], "cna": {"title": "Rails Active Storage has possible content type bypass via metadata in direct uploads", "source": {"advisory": "GHSA-qcfx-2mfw-w4cg", "discovery": "UNKNOWN"}, "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "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", "userInteraction": "PASSIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE"}}], "affected": [{"vendor": "rails", "product": "activestorage", "versions": [{"status": "affected", "version": ">= 8.1.0.beta1, < 8.1.2.1"}, {"status": "affected", "version": ">= 8.0.0.beta1, < 8.0.4.1"}, {"status": "affected", "version": "< 7.2.3.1"}]}], "references": [{"url": "https://github.com/rails/rails/security/advisories/GHSA-qcfx-2mfw-w4cg", "name": "https://github.com/rails/rails/security/advisories/GHSA-qcfx-2mfw-w4cg", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/rails/rails/commit/707c0f1f41f067fdf96d54e99d43b28dfaae7e53", "name": "https://github.com/rails/rails/commit/707c0f1f41f067fdf96d54e99d43b28dfaae7e53", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/rails/rails/commit/8fcb934caadc79c8cc4ce53287046d0f67005b3e", "name": "https://github.com/rails/rails/commit/8fcb934caadc79c8cc4ce53287046d0f67005b3e", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/rails/rails/commit/d9502f5214e2198245a4c1defe9cd02a7c8057d0", "name": "https://github.com/rails/rails/commit/d9502f5214e2198245a4c1defe9cd02a7c8057d0", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/rails/rails/releases/tag/v7.2.3.1", "name": "https://github.com/rails/rails/releases/tag/v7.2.3.1", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/rails/rails/releases/tag/v8.0.4.1", "name": "https://github.com/rails/rails/releases/tag/v8.0.4.1", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/rails/rails/releases/tag/v8.1.2.1", "name": "https://github.com/rails/rails/releases/tag/v8.1.2.1", "tags": ["x_refsource_MISC"]}], "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-925", "description": "CWE-925: Improper Verification of Intent by Broadcast Receiver"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-23T23:21:29.843Z"}}}, "cveMetadata": {"cveId": "CVE-2026-33173", "state": "PUBLISHED", "dateUpdated": "2026-03-24T15:12:50.569Z", "dateReserved": "2026-03-17T22:16:36.719Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-03-23T23:21:29.843Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "activestorage", "vendor": "rails", "versions": [{"status": "affected", "version": ">= 8.1.0.beta1, < 8.1.2.1"}, {"status": "affected", "version": ">= 8.0.0.beta1, < 8.0.4.1"}, {"status": "affected", "version": "< 7.2.3.1"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*", "matchCriteriaId": "D9DC6CB9-DC6C-4CBB-9806-3936ADBC8F1B", "versionEndExcluding": "7.2.3.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*", "matchCriteriaId": "FA8791E1-8B96-43F6-A3EC-A7E60D700330", "versionEndExcluding": "8.0.4.1", "versionStartIncluding": "8.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*", "matchCriteriaId": "978E0135-D14B-41DE-87E4-CF059A23E189", "versionEndExcluding": "8.1.2.1", "versionStartIncluding": "8.1.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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 detecci\u00f3n y el an\u00e1lisis MIME. Esto permite a un atacante cargar contenido arbitrario mientras declara un 'content_type' seguro, eludiendo cualquier validaci\u00f3n que dependa de la identificaci\u00f3n autom\u00e1tica 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."}], "id": "CVE-2026-33173", "lastModified": "2026-06-17T10:37:04.677", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33173", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-24T14:14:22.499615Z", "version": "2.0.3"}}]}, "published": "2026-03-24T00:16:28.457", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "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": ["Release Notes"], "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": ["Vendor Advisory"], "url": "https://github.com/rails/rails/security/advisories/GHSA-qcfx-2mfw-w4cg"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-925"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "Rails: Active Storage: Rails Active Storage: Content type bypass via arbitrary metadata in direct uploads", "id": "2450545", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450545"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L", "status": "draft"}, "cwe": "CWE-1287", "details": ["A flaw was found in Rails Active Storage. A remote attacker, acting as a direct-upload client, can exploit this vulnerability by manipulating metadata during file uploads. By setting internal flags, the attacker can bypass the system's automatic MIME (Multipurpose Internet Mail Extensions) type detection and analysis. This allows the attacker to upload arbitrary content, potentially circumventing security validations that rely on correct content type identification."], "name": "CVE-2026-33173", "package_state": [{"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp20/system", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp21/system", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp21/zync", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp22/system", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp22/zync", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp24/system", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp24/zync", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp25/system", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp25/zync", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp26/system", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp26/zync", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp2/system-rhel7", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp2/system-rhel8", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp2/system-rhel9", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp2/zync-rhel7", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp2/zync-rhel8", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Affected", "package_name": "3scale-amp2/zync-rhel9", "product_name": "Red Hat 3scale API Management Platform 2"}], "public_date": "2026-03-23T23:21:29Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-33173\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-33173\nhttps://github.com/rails/rails/commit/707c0f1f41f067fdf96d54e99d43b28dfaae7e53\nhttps://github.com/rails/rails/commit/8fcb934caadc79c8cc4ce53287046d0f67005b3e\nhttps://github.com/rails/rails/commit/d9502f5214e2198245a4c1defe9cd02a7c8057d0\nhttps://github.com/rails/rails/releases/tag/v7.2.3.1\nhttps://github.com/rails/rails/releases/tag/v8.0.4.1\nhttps://github.com/rails/rails/releases/tag/v8.1.2.1\nhttps://github.com/rails/rails/security/advisories/GHSA-qcfx-2mfw-w4cg"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[8.1.0.beta1,8.1.2.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[8.0.0.beta1,8.0.4.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,7.2.3.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "activestorage", "source": "cna", "vendor": "rails"}, "product": "activestorage", "vendor": "rails"}], "analysis": {"en": {"generated_at": "2026-03-24T19:37:19.876998+00:00", "value": {"mitigation_remediation": ["Upgrade to Rails 8.1.2.1 or newer, 8.0.4.1 or newer, or 7.2.3.1 or newer to apply the patch."], "summary": {"action": "Patch immediately", "impact": "Content type bypass leading to arbitrary file upload"}, "threat_synthesis": {"affected_systems": "The flaw affects Rails Active Storage, specifically versions before 8.1.2.1, 8.0.4.1, and 7.2.3.1. Any Rails application that uses Active Storage and has not applied the corresponding patch is vulnerable. The issue resides in the DirectUploadsController component of the Rails framework.", "description_and_impact": "The vulnerability occurs when direct uploads are processed by Rails Active Storage: metadata supplied by the client is persisted on blobs, including internal flags such as identified and analyzed. An attacker can set these to skip automatic MIME type detection and content analysis, allowing arbitrary files to be stored under a benign content_type. This bypasses any validation that relies on content type identification, potentially leading to the execution of malicious code or the storage of unwanted content.", "risk_and_exploitability": "The vulnerability has a CVSS score of 5.3, indicating medium severity, and a very low EPSS probability of less than 1%. It is not listed in the CISA KEV catalog. Attackers can exploit it by crafting a direct-upload request that includes privileged metadata keys; the required conditions are served over the network, making the attack remote. The bypass allows uploading arbitrary data while deceiving the application into treating it as safe."}}}}, "created": "2026-03-24T10:29:58.434306+00:00", "updated": "2026-03-25T20:36:05.992419+00:00", "vendors": ["rails", "rails$PRODUCT$activestorage"]}