{"id":"CVE-2025-49595","state":"PUBLISHED","title":"n8n Vulnerable to Denial of Service via Malformed Binary Data Requests","description":"n8n is a workflow automation platform. Prior to version 1.99.0, there is a denial of Service vulnerability in /rest/binary-data endpoint when processing empty filesystem URIs (filesystem:// or filesystem-v2://). This allows authenticated attackers to cause service unavailability through malformed filesystem URI requests, effecting the /rest/binary-data endpoint and n8n.cloud instances (confirmed HTTP/2 524 timeout responses). Attackers can exploit this by sending GET requests with empty filesystem URIs (filesystem:// or filesystem-v2://) to the /rest/binary-data endpoint, causing resource exhaustion and service disruption. This issue has been patched in version 1.99.0.","publishedAt":"2025-07-03T12:16:47.207Z","updatedAt":"2025-07-03T13:14:59.815Z","severity":{"score":4.9,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["n8n-io n8n"],"affected":[{"vendor":"n8n-io","product":"n8n","versions":[{"version":"< 1.99.0","status":"affected"}]}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-pr9r-gxgp-9rm8","https://github.com/n8n-io/n8n/pull/16229","https://github.com/n8n-io/n8n/commit/43c52a8b4f844e91b02e3cc9df92826a2d7b6052"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T20:09:23.771Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/49xxx/CVE-2025-49595.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-49595","state":"PUBLISHED","datePublished":"2025-07-03T12:16:47.207Z","dateUpdated":"2025-07-03T13:14:59.815Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-06-06T15:44:21.557Z"},"containers":{"cna":{"title":"n8n Vulnerable to Denial of Service via Malformed Binary Data Requests","descriptions":[{"lang":"en","value":"n8n is a workflow automation platform. Prior to version 1.99.0, there is a denial of Service vulnerability in /rest/binary-data endpoint when processing empty filesystem URIs (filesystem:// or filesystem-v2://). This allows authenticated attackers to cause service unavailability through malformed filesystem URI requests, effecting the /rest/binary-data endpoint and n8n.cloud instances (confirmed HTTP/2 524 timeout responses). Attackers can exploit this by sending GET requests with empty filesystem URIs (filesystem:// or filesystem-v2://) to the /rest/binary-data endpoint, causing resource exhaustion and service disruption. This issue has been patched in version 1.99.0."}],"affected":[{"vendor":"n8n-io","product":"n8n","versions":[{"version":"< 1.99.0","status":"affected"}]}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-pr9r-gxgp-9rm8","name":"https://github.com/n8n-io/n8n/security/advisories/GHSA-pr9r-gxgp-9rm8","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/n8n-io/n8n/pull/16229","name":"https://github.com/n8n-io/n8n/pull/16229","tags":["x_refsource_MISC"]},{"url":"https://github.com/n8n-io/n8n/commit/43c52a8b4f844e91b02e3cc9df92826a2d7b6052","name":"https://github.com/n8n-io/n8n/commit/43c52a8b4f844e91b02e3cc9df92826a2d7b6052","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":4.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-07-03T12:16:47.207Z"},"source":{"advisory":"GHSA-pr9r-gxgp-9rm8","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-07-03T13:10:37.624242Z","id":"CVE-2025-49595","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-07-03T13:14:59.815Z"}}]}}}