{"id":"EUVD-2026-117792","enisaUuid":"16ecf38a-874b-39e6-9003-ab938025bf3c","description":"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.","datePublished":"Nov 5, 2026, 8:37:39 PM","dateUpdated":"Nov 5, 2026, 8:37:39 PM","baseScore":8.4,"baseScoreVersion":"4.0","baseScoreVector":"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","references":"https://github.com/ardatan/graphql-tools/security/advisories/GHSA-c4qx-w738-7hr3\nhttps://github.com/ardatan/graphql-tools/pull/8467\nhttps://github.com/ardatan/graphql-tools/commit/19f5b3373fd7ace0688d19950fc529ce8347952a\nhttps://github.com/ardatan/graphql-tools/commit/20d36a5c6eb8fd5524420988e01a48618c450d70\nhttps://github.com/ardatan/graphql-tools/releases/tag/@graphql-tools/utils@12.0.2\n","aliases":"CVE-2026-114604\nGHSA-c4qx-w738-7hr3\n","assigner":"GitHub_M","epss":0.0,"enisaIdProduct":[{"id":"0d776289-ac6f-3cde-94d1-ff23d94e99c4","product":{"name":"graphql-tools","vendor":{"name":"ardatan"}},"product_version":"10.10.1, \u003c 12.0.2"}],"enisaIdVendor":[{"id":"c30c647e-6052-37f2-8309-3de68e311e82","vendor":{"name":"ardatan"}}],"enisaIdVulnerability":[{"id":"4bb01e3d-2050-3f87-8d8f-21cf97f83b3f","vulnerability":{"id":"CVE-2026-114604","description":"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.","datePublished":"Nov 5, 2026, 8:37:39 PM","dateUpdated":"Nov 5, 2026, 8:37:39 PM","status":"PUBLISHED","baseScore":8.4,"baseScoreVersion":"4.0","baseScoreVector":"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","references":"https://github.com/ardatan/graphql-tools/security/advisories/GHSA-c4qx-w738-7hr3\nhttps://github.com/ardatan/graphql-tools/pull/8467\nhttps://github.com/ardatan/graphql-tools/commit/19f5b3373fd7ace0688d19950fc529ce8347952a\nhttps://github.com/ardatan/graphql-tools/commit/20d36a5c6eb8fd5524420988e01a48618c450d70\nhttps://github.com/ardatan/graphql-tools/releases/tag/@graphql-tools/utils@12.0.2\n","enisa_id":"EUVD-2026-117792\n","assigner":"GitHub_M","epss":0.0,"dataProcessed":"Nov 7, 2026, 6:00:44 AM","vulnerabilityProduct":[{"id":"bde54c0d-f39d-30ed-bc2b-51a6b096fe2e","product":{"name":"graphql-tools","vendor":{"name":"ardatan"}},"product_version":"10.10.1, \u003c 12.0.2"}],"vulnerabilityVendor":[{"id":"f2168617-5798-349b-9387-0ea225a31149","vendor":{"name":"ardatan"}}]}},{"id":"7872f047-627a-357e-a238-8711f9c0c083","vulnerability":{"id":"GHSA-c4qx-w738-7hr3","description":"GraphQL Tools: Prototype pollution in mergeIncrementalResult via non-primitive path segments","datePublished":"Oct 22, 2026, 4:28:31 PM","dateUpdated":"Oct 22, 2026, 4:28:31 PM","baseScore":0.0,"references":"https://github.com/ardatan/graphql-tools/security/advisories/GHSA-c4qx-w738-7hr3\nhttps://github.com/ardatan/graphql-tools/pull/8467\nhttps://github.com/ardatan/graphql-tools/commit/19f5b3373fd7ace0688d19950fc529ce8347952a\nhttps://github.com/ardatan/graphql-tools/commit/20d36a5c6eb8fd5524420988e01a48618c450d70\nhttps://github.com/ardatan/graphql-tools\nhttps://github.com/ardatan/graphql-tools/releases/tag/@graphql-tools/utils@12.0.2\n","enisa_id":"EUVD-2026-117792\n","aliases":"CVE-2026-114604\nGHSA-c4qx-w738-7hr3\n","epss":0.0,"dataProcessed":"Nov 6, 2026, 7:03:49 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[]}