CVE-2026-33027

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33027", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-17T17:22:14.668Z", "datePublished": "2026-03-30T17:59:30.926Z", "dateUpdated": "2026-03-30T18:37:18.224Z"}, "containers": {"cna": {"title": "Nginx UI: Improper Path Validation Allows Recursive Deletion of the Nginx Configuration Directory", "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "lang": "en", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-73", "lang": "en", "description": "CWE-73: External Control of File Name or Path", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m8p8-53vf-8357", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m8p8-53vf-8357"}, {"name": "https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4"}], "affected": [{"vendor": "0xJacky", "product": "nginx-ui", "versions": [{"version": "< 2.3.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-30T17:59:30.926Z"}, "descriptions": [{"lang": "en", "value": "Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui configuration improperly handles URL-encoded traversal sequences. When specially crafted paths are supplied, the backend resolves them to the base Nginx configuration directory and executes the operation on the base directory (/etc/nginx). In particular, this allows an authenticated user to remove the entire /etc/nginx directory, resulting in a partial Denial of Service. This issue has been patched in version 2.3.4."}], "source": {"advisory": "GHSA-m8p8-53vf-8357", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m8p8-53vf-8357", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-30T18:37:15.335473Z", "id": "CVE-2026-33027", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-30T18:37:18.224Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-33027", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-30T18:37:15.335473Z"}}}], "references": [{"url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m8p8-53vf-8357", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-30T18:37:09.291Z"}}], "cna": {"title": "Nginx UI: Improper Path Validation Allows Recursive Deletion of the Nginx Configuration Directory", "source": {"advisory": "GHSA-m8p8-53vf-8357", "discovery": "UNKNOWN"}, "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 6.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE"}}], "affected": [{"vendor": "0xJacky", "product": "nginx-ui", "versions": [{"status": "affected", "version": "< 2.3.4"}]}], "references": [{"url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m8p8-53vf-8357", "name": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m8p8-53vf-8357", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4", "name": "https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui configuration improperly handles URL-encoded traversal sequences. When specially crafted paths are supplied, the backend resolves them to the base Nginx configuration directory and executes the operation on the base directory (/etc/nginx). In particular, this allows an authenticated user to remove the entire /etc/nginx directory, resulting in a partial Denial of Service. This issue has been patched in version 2.3.4."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-22", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-73", "description": "CWE-73: External Control of File Name or Path"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-30T17:59:30.926Z"}}}, "cveMetadata": {"cveId": "CVE-2026-33027", "state": "PUBLISHED", "dateUpdated": "2026-03-30T18:37:18.224Z", "dateReserved": "2026-03-17T17:22:14.668Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-03-30T17:59:30.926Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "nginx-ui", "vendor": "0xJacky", "versions": [{"status": "affected", "version": "< 2.3.4"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:*", "matchCriteriaId": "EAC83E05-2DDE-450D-8718-843174EAB4E1", "versionEndExcluding": "2.3.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui configuration improperly handles URL-encoded traversal sequences. When specially crafted paths are supplied, the backend resolves them to the base Nginx configuration directory and executes the operation on the base directory (/etc/nginx). In particular, this allows an authenticated user to remove the entire /etc/nginx directory, resulting in a partial Denial of Service. This issue has been patched in version 2.3.4."}, {"lang": "es", "value": "Nginx UI es una interfaz de usuario web para el servidor web Nginx. Antes de la versi\u00f3n 2.3.4, la configuraci\u00f3n de nginx-ui maneja incorrectamente las secuencias de recorrido codificadas en URL. Cuando se proporcionan rutas especialmente dise\u00f1adas, el backend las resuelve al directorio base de configuraci\u00f3n de Nginx y ejecuta la operaci\u00f3n en el directorio base (/etc/nginx). En particular, esto permite a un usuario autenticado eliminar todo el directorio /etc/nginx, lo que resulta en una Denegaci\u00f3n de Servicio parcial. Este problema ha sido parcheado en la versi\u00f3n 2.3.4."}], "id": "CVE-2026-33027", "lastModified": "2026-06-17T10:36:48.413", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33027", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-30T18:37:15.335473Z", "version": "2.0.3"}}]}, "published": "2026-03-30T18:16:18.783", "references": [{"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m8p8-53vf-8357"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-m8p8-53vf-8357"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-73"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.3.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "nginx-ui", "source": "cna", "vendor": "0xJacky"}, "product": "nginx-ui", "vendor": "0xjacky"}], "analysis": {"en": {"generated_at": "2026-04-02T04:04:16.722547+00:00", "value": {"mitigation_remediation": ["Upgrade Nginx UI to version 2.3.4 or later."], "summary": {"action": "Patch", "impact": "Denial of Service via recursive deletion of /etc/nginx"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the 0xJacky Nginx UI product before version 2.3.4. Users deploying Nginx UI v2.3.3 or earlier are exposed.", "description_and_impact": "Nginx UI allows an authenticated user to supply specially crafted, URL\u2011encoded traversal sequences that the backend resolves to the base Nginx configuration directory (/etc/nginx). This flaw permits the deletion of that entire directory, causing a partial denial of service by removing essential configuration files. The weakness is a path traversal/bounded directory removal (CWE\u201122, CWE\u201173).", "risk_and_exploitability": "The CVSS score of 6.9 indicates moderate severity, and the EPSS score of less than 1% suggests that exploitation is unlikely to be widespread. The vulnerability is not listed in KEV. Exploitation requires authentication to the web UI; an attacker must first obtain valid credentials or local access. If authenticated, the attacker can craft a URL containing traversal sequences to trigger deletion of the configuration directory."}}}}, "created": "2026-03-30T20:55:18.640420+00:00", "updated": "2026-04-02T07:54:07.728062+00:00", "vendors": ["0xjacky", "0xjacky$PRODUCT$nginx-ui"]}