GHSA-3h96-34p3-xm76: Graphql GraphQL-Ruby's Ruby Lexer Does Not Vulnerability

MODERATE
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CVSS 5.3
CWE-770
Published
Advisory Summary

GHSA-3h96-34p3-xm76 is a MODERATE (CVSS 5.3) graphql-ruby's ruby lexer does not vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Graphql libraries in the RubyGems ecosystem. The issue involves graphql-ruby's ruby lexer does not count comment tokens for the purposes of max_query_string_tokens. Remediation is available by upgrading affected packages to version 2.6.1, 2.5.26, 2.4.18, 2.3.23.

GHSA-3h96-34p3-xm76 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-3h96-34p3-xm76
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-770: Allocation of Resources Without Limits or Throttling
Affected Product Graphql
Package Ecosystem RubyGems
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability Low (A:L)

How to Fix GHSA-3h96-34p3-xm76

To remediate this vulnerability, upgrade all affected Graphql dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

graphql fixed: 2.6.1 
Upgrade graphql to 2.6.1
graphql fixed: 2.5.26 
Upgrade graphql to 2.5.26
graphql fixed: 2.4.18 
Upgrade graphql to 2.4.18
graphql fixed: 2.3.23 
Upgrade graphql to 2.3.23
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for graphql

How to Check if You Are Affected

To determine whether your application is affected by GHSA-3h96-34p3-xm76, inspect your project dependencies for Graphql:

inspect dependencies for graphql

Analyze the terminal output to locate any version of Graphql in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.6.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. In Graphql, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

GraphQL-Ruby's `max_query_string_tokens` configuration didn't count comment tokens against the limit, allowing strings to be processed even after the configured maximum had actually been reached. In patched versions, the Ruby lexer does count these tokens. GraphQL-CParser is not affected by this problem. `max_query_string_tokens` was introduced in v2.3.1. Each 2.x version has received a new patch release for including a fix.

GHSA-3h96-34p3-xm76 Affected Graphql Versions

4 component(s)
Fixed Versions:
2.6.12.5.262.4.182.3.23
Product / Package Ecosystem Affected Versions Fixed Version
graphql
gem/graphql
RubyGems
≥ 2.6.0
< 2.6.1
All 1 versions
2.6.0
2.6.1
graphql
gem/graphql
RubyGems
≥ 2.5.0
< 2.5.26
2.5.26
graphql
gem/graphql
RubyGems
≥ 2.4.0
< 2.4.18
2.4.18
graphql
gem/graphql
RubyGems
≥ 2.3.1
< 2.3.23
2.3.23

References

GitHub Advisory / Wiki ADVISORY
https://github.com/rmosolgo/graphql-ruby/security/advisories/GHSA-3h96-34p3-xm76
Graphql Source Repository REPOSITORY
https://github.com/rmosolgo/graphql-ruby

Frequently Asked Questions

What is GHSA-3h96-34p3-xm76?
GHSA-3h96-34p3-xm76 is a security vulnerability in Graphql involving GraphQL-Ruby's Ruby lexer does not count comment tokens for the purposes of max_query_string_tokens under CWE-770: Allocation of Resources Without Limits or Throttling.
Which Graphql versions are affected?
Affected versions include releases prior to 2.6.1, 2.5.26, 2.4.18, 2.3.23 across affected packages: graphql.
What version fixes GHSA-3h96-34p3-xm76?
Upgrading to 2.6.1, 2.5.26, 2.4.18, 2.3.23 (or the latest patched release for your respective branch) resolves the vulnerability.
Is graphql affected?
Yes, graphql is affected in releases prior to 2.6.1, 2.5.26, 2.4.18, 2.3.23. Upgrade your dependency to 2.6.1, 2.5.26, 2.4.18, 2.3.23 or later.
What is the CVSS score of GHSA-3h96-34p3-xm76?
GHSA-3h96-34p3-xm76 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with GHSA-3h96-34p3-xm76?
GHSA-3h96-34p3-xm76 is classified under CWE-770: Allocation of Resources Without Limits or Throttling (The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.).
How can I check RubyGems dependencies for GHSA-3h96-34p3-xm76?
Run the dependency tree command: 'inspect dependencies for graphql'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-3h96-34p3-xm76",
  "modified" : "2026-05-05T21:51:15Z",
  "published" : "2026-05-05T21:51:15Z",
  "aliases" : [ ],
  "summary" : "GraphQL-Ruby's Ruby lexer does not count comment tokens for the purposes of max_query_string_tokens",
  "details" : "GraphQL-Ruby's `max_query_string_tokens` configuration didn't count comment tokens against the limit, allowing strings to be processed even after the configured maximum had actually been reached. \n\nIn patched versions, the Ruby lexer does count these tokens. \n\nGraphQL-CParser is not affected by this problem. \n\n`max_query_string_tokens` was introduced in v2.3.1. Each 2.x version has received a new patch release for including a fix.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "graphql"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.6.0"
      }, {
        "fixed" : "2.6.1"
      } ]
    } ],
    "versions" : [ "2.6.0" ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "graphql"
    },
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      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.5.0"
      }, {
        "fixed" : "2.5.26"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "graphql"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.4.0"
      }, {
        "fixed" : "2.4.18"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "graphql"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
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      }, {
        "fixed" : "2.3.23"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/rmosolgo/graphql-ruby/security/advisories/GHSA-3h96-34p3-xm76"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rmosolgo/graphql-ruby"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-770" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-05T21:51:15Z",
    "nvd_published_at" : null
  }
}