Threat database

CVE-2026-107376 is a high-severity vulnerability in webonyx graphql-php prior to version 15.32.3. It involves uncontrolled recursion in the parser component, allowing a remote attacker to submit deeply nested GraphQL queries that exhaust the PHP process stack. This can cause segmentation faults (SIGSEGV) that terminate PHP-FPM workers or long-running PHP processes such as Swoole, RoadRunner, ReactPHP, or CLI. The issue occurs before query validation and complexity controls, and cannot be caught by application-level exception handling. The vulnerability is fixed in version 15.32.3.

graphql-go is a Go implementation of GraphQL. In versions 15.31.4 and below, the OverlappingFieldsCanBeMerged validation rule performs O(n²) pairwise comparisons of fields sharing the same response name. An attacker can send a query with thousands of repeated identical fields, causing excessive CPU usage during validation before execution begins. This is not mitigated by existing QueryDepth or QueryComplexity rules. This issue has been fixed in version 15.31.5.