CVE-2025-27407

Remote code execution when loading a crafted GraphQL schema

Description

graphql-ruby is a Ruby implementation of GraphQL. Starting in version 1.11.5 and prior to versions 1.11.8, 1.12.25, 1.13.24, 2.0.32, 2.1.14, 2.2.17, and 2.3.21, loading a malicious schema definition in `GraphQL::Schema.from_introspection` (or `GraphQL::Schema::Loader.load`) can result in remote code execution. Any system which loads a schema by JSON from an untrusted source is vulnerable, including those that use GraphQL::Client to load external schemas via GraphQL introspection. Versions 1.11.8, 1.12.25, 1.13.24, 2.0.32, 2.1.14, 2.2.17, and 2.3.21 contain a patch for the issue.

Category

9.0
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 4.88% Top 15%
Affected: rmosolgo graphql-ruby
Published at:
Updated at:

References

Link Tags
https://github.com/rmosolgo/graphql-ruby/security/advisories/GHSA-q92j-grw3-h492
https://github.com/rmosolgo/graphql-ruby/commit/28233b16c0eb9d0fb7808f4980e061dc7507c4cd
https://github.com/rmosolgo/graphql-ruby/commit/2d2f4ed1f79472f8eed29c864b039649e1de238f
https://github.com/rmosolgo/graphql-ruby/commit/5c5a7b9a9bdce143be048074aea50edb7bb747be
https://github.com/rmosolgo/graphql-ruby/commit/6eca16b9fa553aa957099a30dbde64ddcdac52ca
https://github.com/rmosolgo/graphql-ruby/commit/d0963289e0dab4ea893bbecf12bb7d89294957bb
https://github.com/rmosolgo/graphql-ruby/commit/d1117ae0361d9ed67e0795b07f5c3e98e62f3c7c
https://github.com/rmosolgo/graphql-ruby/commit/e3b33ace05391da2871c75ab4d3b66e29133b367
https://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-released
https://github.com/github-community-projects/graphql-client

Frequently Asked Questions

What is the severity of CVE-2025-27407?
CVE-2025-27407 has been scored as a critical severity vulnerability.
How to fix CVE-2025-27407?
To fix CVE-2025-27407, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-27407 being actively exploited in the wild?
It is possible that CVE-2025-27407 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-27407?
CVE-2025-27407 affects rmosolgo graphql-ruby.
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