GHSA-fc86-6rv6-2jpm: webonyx/graphql-php has quadratic validation cost in OverlappingFieldsCanBeMerged via inline fragments

high Affects webonyx/graphql-php. Feed 2026.10.29.1, updated 2026-10-28; published 2026-05-04; advisory modified 2026-05-05.

webonyx/graphql-php has quadratic validation cost in OverlappingFieldsCanBeMerged via inline fragments

Package: webonyx/graphql-php Composer
Affected versions: <15.32.2
Fixed in: 15.32.2
Severity: high CVSS 7.5
Exploitation: not on CISA KEV
Published: 2026-05-04
Source: osv.dev

References

CWE-407

NVD record webonyx/graphql-php advisories

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Related advisories

CVE-2026-40476 high graphql-php is affected by a Denial of Service via quadratic complexity in OverlappingFiel same package: webonyx/graphql-php
CVE-2026-107376 high webonyx/graphql-php has unbounded recursion in parser that causes stack overflow on crafte same package: webonyx/graphql-php
CVE-2026-71488 high league/commonmark: Quadratic-time denial of service when parsing crafted Markdown same weakness: CWE-407
CVE-2026-86429 high league/commonmark: Denial of service in the SmartPunct and Attributes extensions same weakness: CWE-407
CVE-2026-86434 high league/commonmark: Denial of service via colliding heading slugs same weakness: CWE-407
CVE-2026-86428 high league/commonmark: Denial of service via distinctly-named attributes in the Attributes ext same weakness: CWE-407