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CVE-2026-104852 Details

Description

GraphQL Tools provides utilities for building, stitching, and mocking GraphQL schemas. Prior to 12.0.1, the GraphQL Tools utils package's mergeDeep function follows inherited properties while recursively merging source objects and does not exclude __proto__, constructor, or prototype keys. An unauthenticated GraphQL client can alias fields to those names so responses from two subgraphs collide during ordinary supergraph result merging, causing mergeDeep to traverse Object and Function prototypes and overwrite Function.prototype.call with a subgraph-supplied value. This breaks subsequent requests in the process until restart. This issue is fixed in version 12.0.1.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/ardatan/graphql-tools/commit/0b9529f1988fd36186a7c106a6efe0356f1b7f2e	[email protected]
https://github.com/ardatan/graphql-tools/pull/8423	[email protected]
https://github.com/ardatan/graphql-tools/releases/tag/@graphql-tools/[email protected]	[email protected]
https://github.com/ardatan/graphql-tools/security/advisories/GHSA-7mx3-vvmw-hjmv	[email protected]
https://github.com/graphql-hive/gateway/pull/2600	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1321	Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes