---
id: CVE-2026-107376
title: webonyx graphql-php is a PHP implementation of the GraphQL specification
summary: >-
  webonyx graphql-php is a PHP implementation of the GraphQL specification.
  Prior to 15.32.3, GraphQL\Language\Parser performs recursive descent without a
  recursion limit in parseSelectionSet, parseValueLiteral, and
  parseTypeReference. A r…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H'
cwe:
  - CWE-674
vendor: webonyx
product: graphql-php
affected:
  - graphql-php < 15.32.3
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T21:34:48.800'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107376'
references:
  - url: >-
      https://github.com/webonyx/graphql-php/commit/6c1d6009a0f7557f66753bcfd07badd15acf77f4
    label: security-advisories@github.com
  - url: >-
      https://github.com/webonyx/graphql-php/commit/7b7f2080ca5f7d5340a696fc5701b19a9222d2c2
    label: security-advisories@github.com
  - url: 'https://github.com/webonyx/graphql-php/releases/tag/v15.32.3'
    label: security-advisories@github.com
  - url: >-
      https://github.com/webonyx/graphql-php/security/advisories/GHSA-r7cg-qjjm-xhqq
    label: security-advisories@github.com
  - url: >-
      https://github.com/webonyx/graphql-php/security/advisories/GHSA-r7cg-qjjm-xhqq
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-08T17:56:11.727Z'
---

## Overview

webonyx graphql-php is a PHP implementation of the GraphQL specification. Prior to 15.32.3, GraphQL\Language\Parser performs recursive descent without a recursion limit in parseSelectionSet, parseValueLiteral, and parseTypeReference. A remote attacker can submit deeply nested selection sets, object or list values, or list types that exhaust the PHP process stack during pre-validation parsing, before query validation and complexity controls run. The resulting SIGSEGV can terminate PHP-FPM workers or long-running Swoole, RoadRunner, ReactPHP, or CLI processes and cannot be caught by application-level exception handling. This issue is fixed in version 15.32.3.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.