Inefficient Algorithmic Complexity Affecting webonyx/graphql-php package, versions <15.32.2
Threat Intelligence
Exploit Maturity
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
Proof of Concept
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Test your applications- Snyk IDSNYK-PHP-WEBONYXGRAPHQLPHP-16419541
- published6 May 2026
- disclosed4 May 2026
- creditd0cs1s-bzhunt, BZHunt
Introduced: 4 May 2026
CVE NOT AVAILABLE CWE-407 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade webonyx/graphql-php to version 15.32.2 or higher.
Overview
Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity through the OverlappingFieldsCanBeMerged validation rule. An attacker can exhaust server resources and cause service disruption by submitting specially crafted GraphQL queries containing numerous nested inline fragments, leading to excessive validation time and CPU consumption.