CVE-2026-40476

N/A

Description

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.

CVE Details

CVSS v3.1 ScoreN/A

Published4/17/2026

Last Modified4/20/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-407

References

https://github.com/webonyx/graphql-php/releases/tag/v15.31.5(security-advisories@github.com)

https://github.com/webonyx/graphql-php/security/advisories/GHSA-68jq-c3rv-pcrr(security-advisories@github.com)

IOC Correlations

No correlations recorded

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