CVE-2026-47138 Parse Server: Pre-authentication denial of service via client version header regex backtracking

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.77 and 9.9.1-alpha.1, an unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains...

CVE-2026-47138 Parse Server: Pre-authentication denial of service via client version header regex backtracking

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.77 and 9.9.1-alpha.1, an unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains...

EUVD-2026-36535

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.77 and 9.9.1-alpha.1, an unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains...

CVE-2026-47138 Parse Server: Pre-authentication denial of service via client version header regex backtracking

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.77 and 9.9.1-alpha.1, an unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains...

CVE-2026-47138

CVE-2026-47138 : Parse Server suffers pre-authentication DoS via adversarial client version header input causing polynomial backtracking in the request-header parser. Affected before fixes in versions up to 8.6.76/9.9.0-alpha.1; patched in 8.6.77 and 9.9.1-alpha.1. An unauthenticated attacker wit...

CVE-2026-47248 Parse Server: GraphQL "Did you mean" validation suggestions disclose schema to unauthenticated callers

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.78 and 9.9.1-alpha.2, Parse Server's GraphQL endpoint discloses schema metadata to unauthenticated callers through Did you mean ...? suggestions embedded in GraphQL...

EUVD-2026-36534

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.78 and 9.9.1-alpha.2, Parse Server's GraphQL endpoint discloses schema metadata to unauthenticated callers through Did you mean ...? suggestions embedded in GraphQL...

CVE-2026-47248 Parse Server: GraphQL "Did you mean" validation suggestions disclose schema to unauthenticated callers

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.78 and 9.9.1-alpha.2, Parse Server's GraphQL endpoint discloses schema metadata to unauthenticated callers through Did you mean ...? suggestions embedded in GraphQL...

CVE-2026-47248 Parse Server: GraphQL "Did you mean" validation suggestions disclose schema to unauthenticated callers

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.78 and 9.9.1-alpha.2, Parse Server's GraphQL endpoint discloses schema metadata to unauthenticated callers through Did you mean ...? suggestions embedded in GraphQL...

CVE-2026-47248

CVE-2026-47248 – Parse Server GraphQL schema disclosure via Did you mean …? validation messages What is affected: Parse Server (Node.js) GraphQL endpoint exposes schema metadata to unauthenticated callers through Did you mean …? suggestions embedded in GraphQL validation errors. Root cause: Valid...

CVE-2026-45287

A flaw was found in OpenTelemetry-Go before schema package version 0.0.17. ParseFile in go.opentelemetry.io/otel/schema/v1.0 and v1.1 opens a schema file and passes it to Parse without closing it, leaking one file descriptor per successful call. Repeated parsing in a long-running process can...

PT-2026-48961

Name of the Vulnerable Software and Affected Versions Parse Server versions 9.8.0 through 9.9.1-alpha.4 Description Applications that enable Multi-Factor Authentication MFA and restrict the get permission on the User class via Class-Level Permissions CLP may expose sensitive user data. The issue...

CVE-2026-53725: Exposure of Sensitive Information to an Unauthorized Actor

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. From version 9.8.0 to before version 9.9.1-alpha.5, apps that enable MFA and deny get on the User class via Class-Level Permissions could expose sensitive user data through the /login and...

CVE-2026-47248: Generation of Error Message Containing Sensitive Information

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.78 and 9.9.1-alpha.2, Parse Server's GraphQL endpoint discloses schema metadata to unauthenticated callers through Did you mean ...? suggestions embedded in GraphQL...

PT-2026-48960

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 8.6.79 Parse Server versions prior to 9.9.1 Description The default file upload extension blocklist can be bypassed by appending a trailing dot to a filename with an extension that would normally be blocked. This...

CVE-2026-53726: Authorization Bypass Through User-Controlled Key

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.80 and 9.9.1-alpha.6, a relation query using the $relatedTo operator could read the membership of a Relation field even when that field was hidden from the requesting clie...

CVE-2026-53724: Unrestricted Upload of File with Dangerous Type

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.79 and 9.9.1-alpha.4, the default file upload extension blocklist can be bypassed by appending a trailing dot to a filename whose extension would otherwise be blocked e.g...

CVE-2026-50008: Incorrect Authorization

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. From version 9.8.0 to before version 9.9.1-alpha.3, the routeAllowList server option restricts external client access to a configured list of REST API routes. The check is only enforced as...

CVE-2026-47138: Inefficient Regular Expression Complexity

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.77 and 9.9.1-alpha.1, an unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains...

PT-2026-48962

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 8.6.80 Parse Server versions prior to 9.9.1-alpha.6 Description A relation query using the $relatedTo operator allows an unauthenticated client to read the membership of a Relation field. This occurs even if the...