{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33032", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-17T17:22:14.670Z", "datePublished": "2026-03-30T17:58:42.159Z", "dateUpdated": "2026-03-30T18:37:50.239Z"}, "containers": {"cna": {"title": "Nginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx Takeover", "problemTypes": [{"descriptions": [{"cweId": "CWE-306", "lang": "en", "description": "CWE-306: Missing Authentication for Critical Function", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-h6c2-x2m2-mwhf", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-h6c2-x2m2-mwhf"}], "affected": [{"vendor": "0xJacky", "product": "nginx-ui", "versions": [{"version": "<= 2.3.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-30T17:58:42.159Z"}, "descriptions": [{"lang": "en", "value": "Nginx UI is a web user interface for the Nginx web server. In versions 2.3.5 and prior, the nginx-ui MCP (Model Context Protocol) integration exposes two HTTP endpoints: /mcp and /mcp_message. While /mcp requires both IP whitelisting and authentication (AuthRequired() middleware), the /mcp_message endpoint only applies IP whitelisting - and the default IP whitelist is empty, which the middleware treats as \"allow all\". This means any network attacker can invoke all MCP tools without authentication, including restarting nginx, creating/modifying/deleting nginx configuration files, and triggering automatic config reloads - achieving complete nginx service takeover. At time of publication, there are no publicly available patches."}], "source": {"advisory": "GHSA-h6c2-x2m2-mwhf", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-h6c2-x2m2-mwhf", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-30T18:37:45.494292Z", "id": "CVE-2026-33032", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-30T18:37:50.239Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-33032", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-03-30T18:37:45.494292Z"}}}], "references": [{"url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-h6c2-x2m2-mwhf", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-30T18:37:38.683Z"}}], "cna": {"title": "Nginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx Takeover", "source": {"advisory": "GHSA-h6c2-x2m2-mwhf", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "0xJacky", "product": "nginx-ui", "versions": [{"status": "affected", "version": "<= 2.3.5"}]}], "references": [{"url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-h6c2-x2m2-mwhf", "name": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-h6c2-x2m2-mwhf", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "Nginx UI is a web user interface for the Nginx web server. In versions 2.3.5 and prior, the nginx-ui MCP (Model Context Protocol) integration exposes two HTTP endpoints: /mcp and /mcp_message. While /mcp requires both IP whitelisting and authentication (AuthRequired() middleware), the /mcp_message endpoint only applies IP whitelisting - and the default IP whitelist is empty, which the middleware treats as \"allow all\". This means any network attacker can invoke all MCP tools without authentication, including restarting nginx, creating/modifying/deleting nginx configuration files, and triggering automatic config reloads - achieving complete nginx service takeover. At time of publication, there are no publicly available patches."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-306", "description": "CWE-306: Missing Authentication for Critical Function"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-30T17:58:42.159Z"}}}, "cveMetadata": {"cveId": "CVE-2026-33032", "state": "PUBLISHED", "dateUpdated": "2026-03-30T18:37:50.239Z", "dateReserved": "2026-03-17T17:22:14.670Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-03-30T17:58:42.159Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Nginx UI is a web user interface for the Nginx web server. In versions 2.3.5 and prior, the nginx-ui MCP (Model Context Protocol) integration exposes two HTTP endpoints: /mcp and /mcp_message. While /mcp requires both IP whitelisting and authentication (AuthRequired() middleware), the /mcp_message endpoint only applies IP whitelisting - and the default IP whitelist is empty, which the middleware treats as \"allow all\". This means any network attacker can invoke all MCP tools without authentication, including restarting nginx, creating/modifying/deleting nginx configuration files, and triggering automatic config reloads - achieving complete nginx service takeover. At time of publication, there are no publicly available patches."}], "id": "CVE-2026-33032", "lastModified": "2026-03-30T19:16:25.683", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-03-30T18:16:19.410", "references": [{"source": "[email protected]", "url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-h6c2-x2m2-mwhf"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-h6c2-x2m2-mwhf"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-306"}], "source": "[email protected]", "type": "Secondary"}]}

{}

{}