CVE-2025-27407: rmosolgo graphql-ruby · Code Injection
Affects rmosolgo graphql-rubySource CVE Database V5
Not known to be exploited · CVSS 9.1 Critical · fixed in 2.3.21 : patch rmosolgo graphql-ruby as a priority.
Data as of 26 Oct 2026, 10:12 UTC
- EPSS
- 3.1% chance of exploitation in 30 days – higher than 87% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.3.21, 2.2.17, 2.1.14 +4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 12 Mar 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
RubyGemsgraphql-rubypkg:gem/graphql-rubyOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
- Immediately upgrade graphql-ruby to one of the patched versions: 1.11.8 or later, 1.12.25 or later, 1.13.24 or later, 2.0.32 or later, 2.1.14 or later, 2.2.17 or later, or 2.3.21 or later.
- Avoid loading GraphQL schemas from untrusted or unauthenticated sources. Validate and sanitize any external schema definitions before loading.
- Implement strict access controls and network segmentation to limit exposure of services that perform schema loading.
- Monitor application logs and network traffic for unusual schema loading activities or unexpected introspection queries.
- Employ runtime application self-protection (RASP) or endpoint detection and response (EDR) tools to detect anomalous code execution.
- Conduct code reviews and security testing focusing on GraphQL schema handling and introspection features.
- Educate development teams about the risks of dynamic code generation and the importance of secure schema management.
- If immediate upgrade is not possible, consider disabling schema loading from introspection or applying custom validation layers as temporary mitigations.
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.
References
- github.com/rmosolgo/graphql-ruby/security/advisories/GHSA-q92j-grw3-h492 (opens in a new tab)
- github.com/rmosolgo/graphql-ruby/commit/28233b16c0eb9d0fb7808f4980e061dc7507c4cd (opens in a new tab)
- github.com/rmosolgo/graphql-ruby/commit/2d2f4ed1f79472f8eed29c864b039649e1de238f (opens in a new tab)
- github.com/rmosolgo/graphql-ruby/commit/5c5a7b9a9bdce143be048074aea50edb7bb747be (opens in a new tab)
- github.com/rmosolgo/graphql-ruby/commit/6eca16b9fa553aa957099a30dbde64ddcdac52ca (opens in a new tab)
- github.com/rmosolgo/graphql-ruby/commit/d0963289e0dab4ea893bbecf12bb7d89294957bb (opens in a new tab)
- github.com/rmosolgo/graphql-ruby/commit/d1117ae0361d9ed67e0795b07f5c3e98e62f3c7c (opens in a new tab)
- github.com/rmosolgo/graphql-ruby/commit/e3b33ace05391da2871c75ab4d3b66e29133b367 (opens in a new tab)
- about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-released (opens in a new tab)
- github.com/github-community-projects/graphql-client (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/08/msg00002.html (opens in a new tab)