{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-84360", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-01T16:27:58.128Z", "datePublished": "2026-10-12T21:08:04.687Z", "dateUpdated": "2026-10-12T21:08:04.687Z"}, "containers": {"cna": {"title": "Nginx UI: OTP secure-session step-up can be bypassed via MCP configuration tools", "problemTypes": [{"descriptions": [{"cweId": "CWE-288", "lang": "en", "description": "CWE-288: Authentication Bypass Using an Alternate Path or Channel", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-vc32-4gwf-77xp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-vc32-4gwf-77xp"}, {"name": "https://github.com/0xJacky/nginx-ui/commit/23d1934099b05b2a01589b48129dc3d3159d91c2", "tags": ["x_refsource_MISC"], "url": "https://github.com/0xJacky/nginx-ui/commit/23d1934099b05b2a01589b48129dc3d3159d91c2"}, {"name": "https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.1"}], "affected": [{"vendor": "0xJacky", "product": "nginx-ui", "versions": [{"version": "< 2.4.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-12T21:08:04.687Z"}, "descriptions": [{"lang": "en", "value": "Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, the HTTP configuration mutation routes require RequireSecureSession, but /mcp and /mcp_message require only ordinary authentication before exposing nginx_config_add and nginx_config_modify. An OTP-enabled user with a normal JWT but no valid X-Secure-Session-ID can therefore create or modify Nginx configuration and trigger reload behavior through MCP, bypassing the intended step-up control. This issue is fixed in version 2.4.1."}], "source": {"advisory": "GHSA-vc32-4gwf-77xp", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "nginx-ui", "vendor": "0xJacky", "versions": [{"status": "affected", "version": "< 2.4.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, the HTTP configuration mutation routes require RequireSecureSession, but /mcp and /mcp_message require only ordinary authentication before exposing nginx_config_add and nginx_config_modify. An OTP-enabled user with a normal JWT but no valid X-Secure-Session-ID can therefore create or modify Nginx configuration and trigger reload behavior through MCP, bypassing the intended step-up control. This issue is fixed in version 2.4.1."}], "id": "CVE-2026-84360", "lastModified": "2026-10-12T21:17:22.960", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-12T21:17:22.960", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/0xJacky/nginx-ui/commit/23d1934099b05b2a01589b48129dc3d3159d91c2"}, {"source": "security-advisories@github.com", "url": "https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-vc32-4gwf-77xp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-288"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}