CVE-2026-32248

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.12 and 8.6.38, an unauthenticated attacker can take over any user account that was created with an authentication provider that does not validate the format of the user...

CVE-2026-32242 Parse Server OAuth2 adapter shares mutable state across providers via singleton instance

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.11 and 8.6.37, Parse Server's built-in OAuth2 auth adapter exports a singleton instance that is reused directly across all OAuth2 provider configurations. Under concurrent...

CVE-2026-32242

CVE-2026-32242 affects Parse Server: the built-in OAuth2 adapter previously exported a singleton instance shared across all OAuth2 provider configurations. Under concurrent authentication requests for multiple providers configured with oauth2: true, a token validation could run against another pr...

CVE-2026-32242 Parse Server OAuth2 adapter shares mutable state across providers via singleton instance

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.11 and 8.6.37, Parse Server's built-in OAuth2 auth adapter exports a singleton instance that is reused directly across all OAuth2 provider configurations. Under concurrent...

CVE-2026-32242

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.11 and 8.6.37, Parse Server's built-in OAuth2 auth adapter exports a singleton instance that is reused directly across all OAuth2 provider configurations. Under concurrent...

CVE-2026-32242 Parse Server OAuth2 adapter shares mutable state across providers via singleton instance

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.11 and 8.6.37, Parse Server's built-in OAuth2 auth adapter exports a singleton instance that is reused directly across all OAuth2 provider configurations. Under concurrent...

Regular Expression Denial of Service (ReDoS)

Overview multipart is a Parser for multipart/form-data Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS in the parseoptionsheader function due to the use of a regular expression with ambiguous alternation. An attacker can cause significant resource...

EUVD-2026-11607

multipart vulnerable to ReDoS in parseoptionsheader...

multipart vulnerable to ReDoS in `parse_options_header()`

Summary The parseoptionsheader function in multipart.py uses a regular expression with an ambiguous alternation, which can cause exponential backtracking ReDoS when parsing maliciously crafted HTTP or multipart segment headers. This can be abused for denial of service DoS attacks against web...

GHSA-P2M9-WCP5-6QW3 multipart vulnerable to ReDoS in `parse_options_header()`

Summary The parseoptionsheader function in multipart.py uses a regular expression with an ambiguous alternation, which can cause exponential backtracking ReDoS when parsing maliciously crafted HTTP or multipart segment headers. This can be abused for denial of service DoS attacks against web...

CVE-2026-32141

flatted is a circular JSON parser. Prior to 3.4.0, flatted's parse function uses a recursive revive phase to resolve circular references in deserialized JSON. When given a crafted payload with deeply nested or self-referential $ indices, the recursion depth is unbounded, causing a stack overflow...

CVE-2026-32141 flatted: Unbounded recursion DoS in parse() revive phase

flatted is a circular JSON parser. Prior to 3.4.0, flatted's parse function uses a recursive revive phase to resolve circular references in deserialized JSON. When given a crafted payload with deeply nested or self-referential $ indices, the recursion depth is unbounded, causing a stack overflow...

CVE-2026-32141 flatted: Unbounded recursion DoS in parse() revive phase

flatted is a circular JSON parser. Prior to 3.4.0, flatted's parse function uses a recursive revive phase to resolve circular references in deserialized JSON. When given a crafted payload with deeply nested or self-referential $ indices, the recursion depth is unbounded, causing a stack overflow...

Parse Server: Account takeover via operator injection in authentication data identifier

Impact An unauthenticated attacker can take over any user account that was created with an authentication provider that does not validate the format of the user identifier e.g. anonymous authentication. By sending a crafted login request, the attacker can cause the server to perform a...

Improper Neutralization of Special Elements in Data Query Logic

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 Improper Neutralization of Special Elements in Data Query Logic in the findUsersWithAuthData function of authentication data...

EUVD-2026-11689

Parse Server: Account takeover via operator injection in authentication data identifier...

GHSA-5FW2-8JCV-XH87 Parse Server: Account takeover via operator injection in authentication data identifier

Impact An unauthenticated attacker can take over any user account that was created with an authentication provider that does not validate the format of the user identifier e.g. anonymous authentication. By sending a crafted login request, the attacker can cause the server to perform a...

Race Condition

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 Race Condition in the OAuth2 auth adapter. An attacker can gain unauthorized access by exploiting a race condition that caus...

EUVD-2026-11677

Parse Server's OAuth2 adapter shares mutable state across providers via singleton instance...

GHSA-2CJM-2GWV-M892 Parse Server's OAuth2 adapter shares mutable state across providers via singleton instance

Impact Parse Server's built-in OAuth2 auth adapter exports a singleton instance that is reused directly across all OAuth2 provider configurations. Under concurrent authentication requests for different OAuth2 providers, one provider's token validation may execute using another provider's...