{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-126085", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-11-10T17:07:43.285Z", "datePublished": "2026-11-10T21:12:44.814Z", "dateUpdated": "2026-11-10T21:12:44.814Z"}, "containers": {"cna": {"title": "Active Storage: Possible circumvention of file size limits in Active Storage direct uploads to Google Cloud Storage", "problemTypes": [{"descriptions": [{"cweId": "CWE-602", "lang": "en", "description": "CWE-602: Client-Side Enforcement of Server-Side Security", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"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"}}], "references": [{"name": "https://github.com/rails/rails/security/advisories/GHSA-hfr4-8rjc-97m2", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/rails/rails/security/advisories/GHSA-hfr4-8rjc-97m2"}, {"name": "https://github.com/rails/rails/commit/7fe85a72a789eae5ee070ce3ee1dad10a8a5f70c", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/commit/7fe85a72a789eae5ee070ce3ee1dad10a8a5f70c"}, {"name": "https://github.com/rails/rails/commit/e19916cea31cbfb0030b165ae853b741f8dd57a7", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/commit/e19916cea31cbfb0030b165ae853b741f8dd57a7"}, {"name": "https://github.com/rails/rails/releases/tag/v8.0.5.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/releases/tag/v8.0.5.2"}, {"name": "https://github.com/rails/rails/releases/tag/v8.1.4.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/releases/tag/v8.1.4.1"}], "affected": [{"vendor": "rails", "product": "rails", "versions": [{"version": ">= 8.1, < 8.1.4.1", "status": "affected"}, {"version": "< 8.0.5.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-10T21:12:44.814Z"}, "descriptions": [{"lang": "en", "value": "Active Storage makes it simple to upload and reference files in cloud services and attach those files to Active Record objects. Prior to 8.1.4.1 and 8.0.5.2, ActiveStorage::Service::GCSService#url_for_direct_upload does not bind the declared content length into the signed direct-upload URL, and #headers_for_direct_upload returns no length constraint, so the URL authorizes an upload body of any size. A direct-upload client could store a file larger than the byte_size it declared, and the resulting blob keeps the declared size, possibly bypassing application file size validations and quotas. This is the weakness that CVE-2020-8162 fixed in the S3 service. Applications that store files in Google Cloud Storage and accept direct uploads are affected. This issue is fixed in versions 8.1.4.1 and 8.0.5.2."}], "source": {"advisory": "GHSA-hfr4-8rjc-97m2", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{}