CVE-2026-40324 Hot Chocolate's Utf8GraphQLParser has Stack Overflow via Deeply Nested GraphQL Documents

Hot Chocolate is an open-source GraphQL server. Prior to versions 12.22.7, 13.9.16, 14.3.1, and 15.1.14, Hot Chocolate's recursive descent parser Utf8GraphQLParser has no recursion depth limit. A crafted GraphQL document with deeply nested selection sets, object values, list values, or list types...

CVE-2026-40324

Hot Chocolate (GraphQL server) contains a vulnerability in Utf8GraphQLParser: prior to versions 12.22.7, 13.9.16, 14.3.1, and 15.1.14, the recursive descent parser has no recursion-depth limit, so deeply nested GraphQL documents (as small as ~40 KB) can trigger a StackOverflowException. This unca...

Uncontrolled Recursion

Overview Affected versions of this package are vulnerable to Uncontrolled Recursion via the Utf8GraphQLParser parser. An attacker can cause the application to terminate unexpectedly and disrupt all active services by submitting a crafted GraphQL document with deeply nested selection sets, object...