EUVD-2026-12135
GHSA-pfjj-6f4p-rvmh
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Lifecycle Timeline
4Description
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.
Analysis
Prototype pollution in Apollo Federation before multiple versions.
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Remediation
Within 24 hours: Identify all Apollo Federation gateway instances running versions prior to 2.9.6, 2.10.5, 2.11.6, 2.12.3, and 2.13.2; document business criticality and exposure. Within 7 days: Implement network segmentation to restrict gateway access, deploy WAF rules to block suspicious GraphQL query patterns targeting prototype chain properties, and disable subgraph federation if operationally feasible. …
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External POC / Exploit Code
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