Uncontrolled Recursion

Overview Affected versions of this package are vulnerable to Uncontrolled Recursion through unbounded recursion in the Parser process. An attacker can cause process termination and denial of service by submitting a specially crafted, deeply nested input that exhausts the stack and triggers a...

CVE-2026-40476 graphql-php: Denial of Service via quadratic complexity in OverlappingFieldsCanBeMerged validation

graphql-go is a Go implementation of GraphQL. In versions 15.31.4 and below, the OverlappingFieldsCanBeMerged validation rule performs On² pairwise comparisons of fields sharing the same response name. An attacker can send a query with thousands of repeated identical fields, causing excessive CPU...