CVE-2025-27407
Description
A flaw was found in graphql-ruby. In affected versions of graphq-ruby, loading a malicious schema definition in the GraphQL::Schema.from_introspection or the GraphQL::Schema::Loader.load can cause remote code execution. Any system that loads a schema by JSON from an untrusted source is vulnerable, including those that use GraphQL::Client to load external schemas via GraphQL introspection.
Statement
This vulnerability is marked as Important rather than Critical because interaction with the vulnerable GraphQL library is restricted to only authenticated users in Red Hat Satellite. Satellite does not dynamically load schemas from external sources, further reducing the feasibility of exploitation.
Mitigation
A successful exploitation of this flaw requires GraphQL schema loading. Limiting the schema loading to trusted or authenticated users will limit the impact of the vulnerability. Coupling that with a strict input validation for all GraphQL schema being loaded would reduce the risk of a successful attack and cover as a possible mitigation strategy for this vulnerability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 8.5 | N/A | N/A |
| Attack Vector | Network | N/A | N/A |
| Attack Complexity | High | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Changed | N/A | N/A |
| Confidentiality | High | N/A | N/A |
| Integrity Impact | High | N/A | N/A |
| Availability Impact | High | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
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