CVE-2026-30966

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Prior to 9.5.2-alpha.7 and 8.6.20, Parse Server's internal tables, which store Relation field mappings such as role memberships, can be directly accessed via the REST API or GraphQL API by any client using only the application key. No master key is required. An attacker can create, read, update, or delete records in any internal relationship table. Exploiting this allows the attacker to inject themselves into any Parse Role, gaining all permissions associated with that role, including full read, write, and delete access to classes protected by role-based Class-Level Permissions (CLP). Similarly, writing to any such table that backs a Relation field used in a pointerFields CLP bypasses that access control. This vulnerability is fixed in 9.5.2-alpha.7 and 8.6.20."}, {"lang": "es", "value": "Parse Server es un backend de c\u00f3digo abierto que puede ser desplegado en cualquier infraestructura que pueda ejecutar Node.js. Antes de 9.5.2-alpha.7 y 8.6.20, las tablas internas de Parse Server, que almacenan mapeos de campos Relation como membres\u00edas de rol, pueden ser accedidas directamente a trav\u00e9s de la API REST o la API GraphQL por cualquier cliente usando solo la clave de aplicaci\u00f3n. No se requiere clave maestra. Un atacante puede crear, leer, actualizar o eliminar registros en cualquier tabla de relaci\u00f3n interna. Explotar esto permite al atacante inyectarse en cualquier rol de Parse, obteniendo todos los permisos asociados con ese rol, incluyendo acceso completo de lectura, escritura y eliminaci\u00f3n a clases protegidas por Permisos a Nivel de Clase (CLP) basados en roles. De manera similar, escribir en cualquier tabla de este tipo que respalda un campo Relation utilizado en un CLP de pointerFields elude ese control de acceso. Esta vulnerabilidad est\u00e1 corregida en 9.5.2-alpha.7 y 8.6.20."}], "id": "CVE-2026-30966", "lastModified": "2026-06-17T10:33:14.413", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 10.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-30966", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-11T14:31:08.220236Z", "version": "2.0.3"}}]}, "published": "2026-03-10T21:16:48.980", "references": [{"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/parse-community/parse-server/releases/tag/8.6.20"}, {"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.7"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://github.com/parse-community/parse-server/security/advisories/GHSA-5f92-jrq3-28rc"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.0.0,9.5.2-alpha.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.6.20)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "parse-server", "source": "cna", "vendor": "parse-community"}, "product": "parse_server", "vendor": "parse_community"}], "analysis": {"en": {"generated_at": "2026-04-16T09:28:57.520600+00:00", "value": {"mitigation_remediation": ["Upgrade Parse Server to version 9.5.2\u2011alpha.7 or newer, or 8.6.20 or newer, which removes external exposure of internal tables.", "Limit the use of the application key to trusted processes or services that run inside a secure network segment, ensuring it is not distributed to untrusted clients.", "Enable and review application logs or use an external monitoring solution to detect and alert on unauthorized CRUD operations on internal tables."], "summary": {"action": "Immediate Patch", "impact": "Privilege Escalation via internal table manipulation"}, "threat_synthesis": {"affected_systems": "The issue affects Parse Server versions released before 9.5.2\u2011alpha.7 and 8.6.20, which are available from parse\u2011community. These are open\u2011source backend deployments built on Node.js that can run on any infrastructure. All customers running these versions are vulnerable.", "description_and_impact": "Parse Server allows clients to perform CRUD operations on internal tables that store role membership relations when only the publicly distributed application key is presented. Through this access an attacker can inject themselves into any existing Parse Role and thereby acquire all permissions tied to that role. This includes full read, write, and delete rights to any class that is protected by role\u2011based Class\u2011Level Permissions (CLP). Additionally, writing to tables that back Relation fields that are referenced in a __pointerFields__ CLP can bypass that access control entirely. The vulnerability is therefore a direct privilege escalation and CLP bypass that does not require a master key.", "risk_and_exploitability": "The CVSS score of 10 signifies a critical security flaw. However, the EPSS score is <1%, indicating that the likelihood of exploitation is currently low, and the vulnerability is not listed in the CISA KEV catalog. Despite the low projected exploitation probability, the attack vector\u2014accessing internal tables over the public REST or GraphQL API with an application key\u2014is simple and requires no special privileges. An attacker with knowledge of the application key can readily perform the necessary operations, making the risk high for those environments where the application key is exposed or used by untrusted clients. The risk remains elevated until a patch is applied or a proper mitigative configuration is implemented."}}}}, "created": "2026-03-11T11:42:42.388932+00:00", "updated": "2026-04-16T09:30:06.054523+00:00", "vendors": ["parse_community", "parse_community$PRODUCT$parse_server"]}