# CVE-2026-32621

## Summary

- **CVE ID:** CVE-2026-32621
- **Severity:** CRITICAL
- **CVSS Score:** 9.9 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L)
- **CWE:** CWE-1321
- **Published:** Mar 13, 2026
- **Last Modified:** Mar 16, 2026

## 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 Products

- @apollo — federation-internals (>= 2.13.0-preview.0, < 2.13.2)
- @apollo — federation-internals (>= 2.12.0-preview.0, < 2.12.3)
- @apollo — federation-internals (>= 2.11.0-preview.0, < 2.11.6)
- @apollo — federation-internals (>= 2.10.0-alpha.0, < 2.10.5)
- @apollo — federation-internals (< 2.9.6)
- @apollo — gateway (>= 2.13.0-preview.0, < 2.13.2)
- @apollo — gateway (>= 2.12.0-preview.0, < 2.12.3)
- @apollo — gateway (>= 2.11.0-preview.0, < 2.11.6)
- @apollo — gateway (>= 2.10.0-alpha.0, < 2.10.5)
- @apollo — gateway (< 2.9.6)
- @apollo — query-planner (>= 2.13.0-preview.0, < 2.13.2)
- @apollo — query-planner (>= 2.12.0-preview.0, < 2.12.3)
- @apollo — query-planner (>= 2.11.0-preview.0, < 2.11.6)
- @apollo — query-planner (>= 2.10.0-alpha.0, < 2.10.5)
- @apollo — query-planner (< 2.9.6)

## References

- [CNA](https://github.com/apollographql/federation/security/advisories/GHSA-pfjj-6f4p-rvmh)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.51%
- **EPSS Percentile:** 42.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._