rubocop-rspec-3.9.0.gem: 1 vulnerabilities (highest severity is: 3.7)

[mend-bolt-for-github]

Vulnerable Library - rubocop-rspec-3.9.0.gem

Path to dependency file: /Gemfile.lock

Path to vulnerable library: /tmp/containerbase/cache/.ruby/cache/json-2.19.4.gem

Found in HEAD commit: da0c9c84fdbc82b3b8e2221482a86225136e26be

Vulnerabilities

Vulnerability	Severity	CVSS	Dependency	Type	Fixed in (rubocop-rspec version)	Remediation Possible**
CVE-2026-54696	Low	3.7	json-2.19.4.gem	Transitive	N/A*	❌

*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2026-54696

Vulnerable Library - json-2.19.4.gem

This is a JSON implementation as a Ruby extension in C.

Library home page: https://rubygems.org/gems/json-2.19.4.gem

Path to dependency file: /Gemfile.lock

Path to vulnerable library: /tmp/containerbase/cache/.ruby/cache/json-2.19.4.gem

Dependency Hierarchy:

• rubocop-rspec-3.9.0.gem (Root Library)
  • rubocop-1.86.1.gem
    • ❌ json-2.19.4.gem (Vulnerable Library)

Found in HEAD commit: da0c9c84fdbc82b3b8e2221482a86225136e26be

Found in base branch: main

Vulnerability Details

Ruby JSON is a JSON implementation for Ruby. Versions 2.9.0 through 2.19.8 are vulnerable to heap buffer overflow when the JSON generator is provided with an oversized streamed object. When streaming to an IO JSON.dump(obj, io) and JSON::State#generate(obj, io) can write past the internal JSON generator buffer when a streamed object contains an
attacker-controlled string near 16 KB. Exploitation would result in a reliable process crash/denial of service. This issue has been fixed in version 2.19.9.

Publish Date: 2026-06-30

URL: CVE-2026-54696

CVSS 3 Score Details (3.7)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Low

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-x2f5-4prf-w687

Release Date: 2026-06-30

Fix Resolution: json - 2.19.9

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