Vulnerability · Published Mar 13, 2026 · Assigned by GitHub_M
CVE-2026-32621Apollo Federation has prototype pollution via incomplete key sanitization
Critical 9.9
In plain English
A critical-severity prototype pollution in federation-internals from @apollo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @apollo/federation-internals | 2.9.6 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/federation-internals | 2.10.5 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/federation-internals | 2.11.6 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/federation-internals | 2.12.3 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/federation-internals | 2.13.2 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/gateway | 2.9.6 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/gateway | 2.10.5 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/gateway | 2.11.6 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/gateway | 2.12.3 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/gateway | 2.13.2 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/query-planner | 2.9.6 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/query-planner | 2.10.5 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/query-planner | 2.11.6 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/query-planner | 2.12.3 | GHSA-pfjj-6f4p-rvmh |
| npm | @apollo/query-planner | 2.13.2 | GHSA-pfjj-6f4p-rvmh |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| @apollo | federation-internals | >= 2.13.0-preview.0, < 2.13.2>= 2.12.0-preview.0, < 2.12.3>= 2.11.0-preview.0, < 2.11.6>= 2.10.0-alpha.0, < 2.10.5< 2.9.6 |
| @apollo | gateway | >= 2.13.0-preview.0, < 2.13.2>= 2.12.0-preview.0, < 2.12.3>= 2.11.0-preview.0, < 2.11.6>= 2.10.0-alpha.0, < 2.10.5< 2.9.6 |
| @apollo | query-planner | >= 2.13.0-preview.0, < 2.13.2>= 2.12.0-preview.0, < 2.12.3>= 2.11.0-preview.0, < 2.11.6>= 2.10.0-alpha.0, < 2.10.5< 2.9.6 |
Weakness: CWE-1321 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L