CVE-2026-30938

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.12 and 9.5.1-alpha.1, the requestKeywordDenylist security control can be bypassed by placing any nested object or array before a prohibited keyword in the request payload. This is caused by a logic bug that stops scanning sibling keys after encountering the first nested value. Any custom requestKeywordDenylist entries configured by the developer are equally by-passable using the same technique. All Parse Server deployments are affected. The requestKeywordDenylist is enabled by default. This vulnerability is fixed in 8.6.12 and 9.5.1-alpha.1. Use a Cloud Code beforeSave trigger to validate incoming data for prohibited keywords across all classes.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/parse-community/parse-server/releases/tag/8.6.12	Product Release Notes
https://github.com/parse-community/parse-server/releases/tag/9.5.1-alpha.1	Product Release Notes
https://github.com/parse-community/parse-server/security/advisories/GHSA-q342-9w2p-57fp	Mitigation Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:parseplatform:parse-server::::::node.js::*
	cpe:2.3:a:parseplatform:parse-server::::::node.js::*

History

No history.

Information

Published : 2026-03-10 18:18

Updated : 2026-03-11 19:53

NVD link : CVE-2026-30938

Mitre link : CVE-2026-30938

CVE.ORG link : CVE-2026-30938

JSON object : View

Products Affected

parseplatform

parse-server

CWE

CWE-693

Protection Mechanism Failure

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Prior to 8.6.12 and 9.5.1-alpha.1, the requestKeywordDenylist security control can be bypassed by placing any nested object or array before a prohibited keyword in the request payload. This is caused by a logic bug that stops scanning sibling keys after encountering the first nested value. Any custom requestKeywordDenylist entries configured by the developer are equally by-passable using the same technique. All Parse Server deployments are affected. The requestKeywordDenylist is enabled by default. This vulnerability is fixed in 8.6.12 and 9.5.1-alpha.1. Use a Cloud Code beforeSave trigger to validate incoming data for prohibited keywords across all classes."}, {"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 las versiones 8.6.12 y 9.5.1-alpha.1, el control de seguridad requestKeywordDenylist puede ser eludido al colocar cualquier objeto o array anidado antes de una palabra clave prohibida en la carga \u00fatil de la solicitud. Esto es causado por un error de l\u00f3gica que detiene el escaneo de claves hermanas despu\u00e9s de encontrar el primer valor anidado. Cualquier entrada personalizada de requestKeywordDenylist configurada por el desarrollador es igualmente eludible utilizando la misma t\u00e9cnica. Todas las implementaciones de Parse Server est\u00e1n afectadas. El requestKeywordDenylist est\u00e1 habilitado por defecto. Esta vulnerabilidad est\u00e1 corregida en las versiones 8.6.12 y 9.5.1-alpha.1. 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