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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| @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 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
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sam00/POC-CVE-2026-32621-Apollo-Federation-XSS-Vulnerability ★ 0 · Aug 3, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.