{"id":"CVE-2026-32621","aliases":["GHSA-pfjj-6f4p-rvmh"],"url":"https://o3.security/vulnerability/CVE-2026-32621","summary":"Apollo Federation has prototype pollution via incomplete key sanitization","details":"Apollo Federation is an architecture for declaratively composing APIs into a unified graph. Prior to 2.9.6, 2.10.5, 2.11.6, 2.12.3, and 2.13.2, a vulnerability exists in query plan execution within the gateway that may allow pollution of Object.prototype in certain scenarios. A malicious client may be able to pollute Object.prototype in gateway directly by crafting operations with field aliases and/or variable names that target prototype-inheritable properties. Alternatively, if a subgraph were to be compromised by a malicious actor, they may be able to pollute Object.prototype in gateway by crafting JSON response payloads that target prototype-inheritable properties. This vulnerability is fixed in 2.9.6, 2.10.5, 2.11.6, 2.12.3, and 2.13.2.","published":"2026-03-13T20:29:54.875Z","modified":"2026-08-07T11:31:19.424717740Z","cvss":{"score":9.9,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@apollo/federation-internals","fixedVersion":"2.9.6"},{"ecosystem":"npm","name":"@apollo/federation-internals","fixedVersion":"2.10.5"},{"ecosystem":"npm","name":"@apollo/federation-internals","fixedVersion":"2.11.6"},{"ecosystem":"npm","name":"@apollo/federation-internals","fixedVersion":"2.12.3"},{"ecosystem":"npm","name":"@apollo/federation-internals","fixedVersion":"2.13.2"},{"ecosystem":"npm","name":"@apollo/gateway","fixedVersion":"2.9.6"},{"ecosystem":"npm","name":"@apollo/gateway","fixedVersion":"2.10.5"},{"ecosystem":"npm","name":"@apollo/gateway","fixedVersion":"2.11.6"},{"ecosystem":"npm","name":"@apollo/gateway","fixedVersion":"2.12.3"},{"ecosystem":"npm","name":"@apollo/gateway","fixedVersion":"2.13.2"},{"ecosystem":"npm","name":"@apollo/query-planner","fixedVersion":"2.9.6"},{"ecosystem":"npm","name":"@apollo/query-planner","fixedVersion":"2.10.5"},{"ecosystem":"npm","name":"@apollo/query-planner","fixedVersion":"2.11.6"},{"ecosystem":"npm","name":"@apollo/query-planner","fixedVersion":"2.12.3"},{"ecosystem":"npm","name":"@apollo/query-planner","fixedVersion":"2.13.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32621.json"},{"type":"ADVISORY","url":"https://github.com/apollographql/federation/security/advisories/GHSA-pfjj-6f4p-rvmh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32621"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:31:19.424717740Z"}}