{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-114604","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-21T20:34:25.599Z","datePublished":"2026-11-05T20:37:39.814Z","dateUpdated":"2026-11-05T20:37:39.814Z"},"containers":{"cna":{"title":"GraphQL Tools: Prototype pollution in mergeIncrementalResult via non-primitive path segments","problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.4,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/ardatan/graphql-tools/security/advisories/GHSA-c4qx-w738-7hr3","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ardatan/graphql-tools/security/advisories/GHSA-c4qx-w738-7hr3"},{"name":"https://github.com/ardatan/graphql-tools/pull/8467","tags":["x_refsource_MISC"],"url":"https://github.com/ardatan/graphql-tools/pull/8467"},{"name":"https://github.com/ardatan/graphql-tools/commit/19f5b3373fd7ace0688d19950fc529ce8347952a","tags":["x_refsource_MISC"],"url":"https://github.com/ardatan/graphql-tools/commit/19f5b3373fd7ace0688d19950fc529ce8347952a"},{"name":"https://github.com/ardatan/graphql-tools/commit/20d36a5c6eb8fd5524420988e01a48618c450d70","tags":["x_refsource_MISC"],"url":"https://github.com/ardatan/graphql-tools/commit/20d36a5c6eb8fd5524420988e01a48618c450d70"},{"name":"https://github.com/ardatan/graphql-tools/releases/tag/@graphql-tools/utils@12.0.2","tags":["x_refsource_MISC"],"url":"https://github.com/ardatan/graphql-tools/releases/tag/@graphql-tools/utils@12.0.2"}],"affected":[{"vendor":"ardatan","product":"graphql-tools","versions":[{"version":">= 10.10.1, < 12.0.2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-11-05T20:37:39.814Z"},"descriptions":[{"lang":"en","value":"GraphQL Tools provides utilities for building, stitching, and mocking GraphQL schemas. From 10.10.1 until 12.0.2, the @graphql-tools/utils mergeIncrementalResult helper passes incrementalResult.path segments to setObjectKeyPath without runtime primitive-type validation. A non-primitive segment can bypass strict comparisons against __proto__, constructor, and prototype, then be coerced during property access so a malicious or compromised upstream incremental GraphQL response writes attacker-controlled properties to Object.prototype in the consuming Node.js process. The affected implementation is packages/utils/src/mergeIncrementalResult.ts and is reachable when consumers merge untrusted @defer or @stream transport results. This issue is fixed in version 12.0.2."}],"source":{"advisory":"GHSA-c4qx-w738-7hr3","discovery":"UNKNOWN"}}}}