{"id":"CVE-2026-114604","revision":"5b2ee985dd3b435eb862b9fab306ae63","records":[{"revision":"5b2ee985dd3b435eb862b9fab306ae63","observedAt":"2026-11-05T21:36:21.359+00:00","statement":{"source":"cve-program","id":"CVE-2026-114604","aliases":[],"title":"GraphQL Tools: Prototype pollution in mergeIncrementalResult via non-primitive path segments","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.","state":0,"publishedAt":"2026-11-05T20:37:39.814+00:00","modifiedAt":"2026-11-05T20:37:39.814+00:00","affected":[{"ecosystem":"Vendor product","name":"graphql-tools","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"ardatan\",\n                    \"product\": \"graphql-tools\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 10.10.1, < 12.0.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":8.4,"severity":"HIGH"}],"references":["https://github.com/ardatan/graphql-tools/security/advisories/GHSA-c4qx-w738-7hr3","https://github.com/ardatan/graphql-tools/pull/8467","https://github.com/ardatan/graphql-tools/commit/19f5b3373fd7ace0688d19950fc529ce8347952a","https://github.com/ardatan/graphql-tools/commit/20d36a5c6eb8fd5524420988e01a48618c450d70","https://github.com/ardatan/graphql-tools/releases/tag/@graphql-tools/utils@12.0.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114604","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-114604","identifiers":["CVE-2026-114604"]},"retained":false,"historicalAffected":[]}],"coverage":[]}