NPM: parse-server: Endpoints `/login` and `/verifyPassword` disclose MFA secrets and protected fields when `_User` get is denied

NPM: parse-server: Endpoints /login and /verifyPassword disclose MFA secrets and protected fields when User get is denied vulnerability discovered by ? in WordPress Npm parse-server versions = 9.8.0, 9.9.1-alpha.5...

GHSA-75V4-M273-5J49 parse-server: Endpoints `/login` and `/verifyPassword` disclose MFA secrets and protected fields when `_User` get is denied

Impact Apps that enable MFA and deny get on the User class via Class-Level Permissions could expose sensitive user data through the /login and /verifyPassword endpoints. These endpoints re-fetch the user through the access-controlled query pipeline CLP, protectedFields, auth-adapter sanitizers...

parse-server: Endpoints `/login` and `/verifyPassword` disclose MFA secrets and protected fields when `_User` get is denied

Impact Apps that enable MFA and deny get on the User class via Class-Level Permissions could expose sensitive user data through the /login and /verifyPassword endpoints. These endpoints re-fetch the user through the access-controlled query pipeline CLP, protectedFields, auth-adapter sanitizers...

NPM: parse-server: Stored XSS via trailing-dot filename bypassing file upload extension blocklist

NPM: parse-server: Stored XSS via trailing-dot filename bypassing file upload extension blocklist vulnerability discovered by ? in WordPress Npm parse-server versions = 8.6.78...

EUVD-2026-36539

parse-server: Stored XSS via trailing-dot filename bypassing file upload extension blocklist...

GHSA-7WQV-XJF3-X35V parse-server: Stored XSS via trailing-dot filename bypassing file upload extension blocklist

Impact 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. poc.svg.. The trailing dot causes the extension parser to extract an empty string, which short-circuits the blocklist check, and the...

NPM: parse-server: Server option routeAllowList is bypassable through batch sub-requests

NPM: parse-server: Server option routeAllowList is bypassable through batch sub-requests vulnerability discovered by ? in WordPress Npm parse-server versions = 9.8.0, 9.9.1-alpha.3...

GHSA-P84R-H6RX-F2XR parse-server: Server option routeAllowList is bypassable through batch sub-requests

Impact The routeAllowList server option restricts external client access to a configured list of REST API routes. The check is only enforced as Express middleware against the outer HTTP request URL, so the /batch handler dispatches each sub-request to the internal router without re-running the...

GHSA-CGXM-VR2F-6FJ8 parse-server: Denial of service via exponential-time processing of deeply nested query operators

Impact Parse Server is vulnerable to denial of service. A remote attacker can send a single, small query 1 KB containing deeply nested query condition operators. Parse Server processes the nested structure with exponential time complexity, which blocks the Node.js event loop and makes the server...

Inefficient Algorithmic Complexity

Overview parse-server is a version of the Parse backend that can be deployed to any infrastructure that can run Node.js. Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity through the query-depth processing in validateQueryDepth and...

PT-2026-56606

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 9.9.1-alpha.12 Parse Server versions prior to 8.6.82 Description Deeply nested $or, $and, and $nor query condition operators used in the REST API or LiveQuery query handling can trigger exponential-time processin...

PT-2026-51112

Name of the Vulnerable Software and Affected Versions Parse Server affected versions not specified Description The default fileUpload.fileExtensions blocklist can be bypassed by uploading files with non-standard or compound extensions combined with a dangerous content type. This allows the upload...

PT-2026-56607

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 9.9.1-alpha.13 Parse Server versions prior to 8.6.83 Description A LiveQuery subscriber may receive object field values they are not authorized to read. This occurs when a single save operation simultaneously...

BIT-PARSE-2026-53726 Parse Server: Relation `$relatedTo` query bypasses `protectedFields` and owning-object ACL

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, a relation query using the $relatedTo operator could read the membership of a Relation field even when that field was hidden from the requesting client by...

BIT-PARSE-2026-53725 Parse Server: Endpoints `/login` and `/verifyPassword` disclose MFA secrets and protected fields when `_User` get is denied

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, apps that enable MFA and deny get on the User class via Class-Level Permissions could expose sensitive user data through the /login and /verifyPasswo...

BIT-PARSE-2026-53724 Parse Server: Stored XSS via trailing-dot filename bypassing file upload extension blocklist

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, 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. poc.svg...

BIT-PARSE-2026-50008 Parse Server: Server option routeAllowList is bypassable through batch sub-requests

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, the routeAllowList server option restricts external client access to a configured list of REST API routes. The check is only enforced as Express...

BIT-PARSE-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, Parse Server's GraphQL endpoint discloses schema metadata to unauthenticated callers through Did you mean ...? suggestions embedded in GraphQL validation-err...

BIT-PARSE-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, an unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains...

Cross-site Scripting (XSS)

Overview parse-server is a version of the Parse backend that can be deployed to any infrastructure that can run Node.js. Affected versions of this package are vulnerable to Cross-site Scripting XSS through the FilesController.createFile and FilesRouter file-extension handling in the file upload...