{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-126072", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-11-10T17:07:43.284Z", "datePublished": "2026-11-10T20:44:52.734Z", "dateUpdated": "2026-11-10T20:44:52.734Z"}, "containers": {"cna": {"title": "Action Pack: Possible DoS vulnerability in Action Controller Live streaming", "problemTypes": [{"descriptions": [{"cweId": "CWE-833", "lang": "en", "description": "CWE-833: Deadlock", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/rails/rails/security/advisories/GHSA-rwvh-fw6r-pwvp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/rails/rails/security/advisories/GHSA-rwvh-fw6r-pwvp"}, {"name": "https://github.com/rails/rails/commit/27ad18ed5900dee28ba20e9c6fc718ff751fa215", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/commit/27ad18ed5900dee28ba20e9c6fc718ff751fa215"}, {"name": "https://github.com/rails/rails/commit/ccbfc09690fef05fdd2a9969c917a71b92cc98fc", "tags": ["x_refsource_MISC"], "url": "https://github.com/rails/rails/commit/ccbfc09690fef05fdd2a9969c917a71b92cc98fc"}, {"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": "2026-11-10T20:44:52.734Z"}, "descriptions": [{"lang": "en", "value": "Action Pack is a framework for handling and responding to web requests. Prior to 8.1.4.1 and 8.0.5.2, ActionController::Live::Buffer#close pushes its end-of-stream marker onto the response's bounded queue while it holds the buffer's monitor. When the client has stopped reading and the queue is full, the push blocks, and Buffer#abort, which runs when the client disconnects or a write times out, waits indefinitely for the same monitor. Each such response could permanently hold a web server thread and its ActionController::Live thread, possibly resulting in a DoS vulnerability through thread exhaustion. Applications that stream responses with ActionController::Live, including send_stream, are affected. Applications that serve large files through Active Storage proxy mode are exposed to unauthenticated clients. This issue is fixed in versions 8.1.4.1 and 8.0.5.2."}], "source": {"advisory": "GHSA-rwvh-fw6r-pwvp", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "rails", "vendor": "rails", "versions": [{"status": "affected", "version": ">= 8.1, < 8.1.4.1"}, {"status": "affected", "version": "< 8.0.5.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Action Pack is a framework for handling and responding to web requests. Prior to 8.1.4.1 and 8.0.5.2, ActionController::Live::Buffer#close pushes its end-of-stream marker onto the response's bounded queue while it holds the buffer's monitor. When the client has stopped reading and the queue is full, the push blocks, and Buffer#abort, which runs when the client disconnects or a write times out, waits indefinitely for the same monitor. Each such response could permanently hold a web server thread and its ActionController::Live thread, possibly resulting in a DoS vulnerability through thread exhaustion. Applications that stream responses with ActionController::Live, including send_stream, are affected. Applications that serve large files through Active Storage proxy mode are exposed to unauthenticated clients. This issue is fixed in versions 8.1.4.1 and 8.0.5.2."}], "id": "CVE-2026-126072", "lastModified": "2026-11-10T21:19:25.413", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-10T21:19:25.413", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/rails/rails/commit/27ad18ed5900dee28ba20e9c6fc718ff751fa215"}, {"source": "security-advisories@github.com", "url": "https://github.com/rails/rails/commit/ccbfc09690fef05fdd2a9969c917a71b92cc98fc"}, {"source": "security-advisories@github.com", "url": "https://github.com/rails/rails/releases/tag/v8.0.5.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/rails/rails/releases/tag/v8.1.4.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/rails/rails/security/advisories/GHSA-rwvh-fw6r-pwvp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-833"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}