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

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-2026-47248 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...

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...

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...

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...

CVE-2026-39321

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.8.0-alpha.6 and 8.6.74, he login endpoint response time differs measurably depending on whether the submitted username or email exists in the database. When a user is not found, the...

CVE-2026-39381

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.8.0-alpha.7 and 8.6.75, the GET /sessions/me endpoint returns Session fields that the server operator explicitly configured as protected via the protectedFields server option. Any...

@bigegg/parse-server-schema-config (>=1.0.5 <=1.0.10), @kontaa/subgraph (>=1.0.1 <=1.2.3) +27 more potentially affected by CVE-2026-47248 via parse-server (>=2.0.8 <=7.5.4)

parse-server NPM version =2.0.8, =1.0.5, =1.0.1, =1.2.1, =2.4.46, =2.4.8, =1.0.0, =1.0.0, =1.0.1, =0.1.1, =0.0.2, =1.0.0, =0.1.0, =0.1.7, =0.0.1, =0.0.29 - parse-cli-server2 =0.0.30 and more Source cves: CVE-2026-47248 Source advisory: OSV:GHSA-8CPH-RGR4-G5VJ...

@openinc/parse-server-opendash (>=3.31.25 <=4.0.34) potentially affected by CVE-2026-47248 via parse-server (>=9.6.0-alpha.37 <=9.9.0)

parse-server NPM version =9.6.0-alpha.37, =3.31.25, =4.0.34 Source cves: CVE-2026-47248 Source advisory: SNYK:JS-PARSESERVER-17111546...

Information Exposure

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 Information Exposure via the Did you mean ...? suggestions in GraphQL validation-error messages. An attacker can enumerate...

@openinc/parse-server-opendash (>=3.31.25 <=4.0.34) potentially affected by CVE-2026-47248 via parse-server (>=9.6.0-alpha.37 <=9.9.0)

parse-server NPM version =9.6.0-alpha.37, =3.31.25, =4.0.34 Source cves: CVE-2026-47248 Source advisory: OSV:GHSA-8CPH-RGR4-G5VJ...

@openinc/parse-server-opendash (>=3.31.25 <=4.0.34) potentially affected by CVE-2026-47138 via parse-server (>=9.6.0-alpha.37 <=9.9.0)

parse-server NPM version =9.6.0-alpha.37, =3.31.25, =4.0.34 Source cves: CVE-2026-47138 Source advisory: OSV:GHSA-38M6-82C8-4XFM...

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

Impact An unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains adversarial input that triggers polynomial backtracking in a request-header parser. The parsing runs before session authentication and before...

@bigegg/parse-server-schema-config (>=1.0.5 <=1.0.10), @kontaa/subgraph (>=1.0.1 <=1.2.3) +27 more potentially affected by CVE-2026-47138 via parse-server (>=2.0.8 <=7.5.4)

parse-server NPM version =2.0.8, =1.0.5, =1.0.1, =1.2.1, =2.4.46, =2.4.8, =1.0.0, =1.0.0, =1.0.1, =0.1.1, =0.0.2, =1.0.0, =0.1.0, =0.1.7, =0.0.1, =0.0.29 - parse-cli-server2 =0.0.30 and more Source cves: CVE-2026-47138 Source advisory: OSV:GHSA-38M6-82C8-4XFM...

GHSA-38M6-82C8-4XFM Parse Server: Pre-authentication denial of service via client version header regex backtracking

Impact An unauthenticated attacker who knows a publicly-known Parse Application ID can submit a single HTTP request whose client SDK version field contains adversarial input that triggers polynomial backtracking in a request-header parser. The parsing runs before session authentication and before...