CVE-2026-67991
HighCVSS 7.5Summary
crmne/ruby_llm at commit fa6f279847d6d7027814539d9c0dfc3bbdfd2a83 contains a polynomial-time regular expression denial-of-service condition in RubyLLM::Utils.underscore on Ruby 3.1.x. A very long crafted class, agent, or tool name can cause excessive CPU consumption and a denial of service.
Risk Assessment
An attacker can send specially crafted input, causing excessive CPU usage and service unavailability, potentially leading to application downtime.
Recommendation
Update ruby_llm to a version containing the fix or apply length restrictions on class, agent, and tool names. Monitor CPU usage.
Original NVD description (English source)
crmne/ruby_llm at commit fa6f279847d6d7027814539d9c0dfc3bbdfd2a83 contains a polynomial-time regular expression denial-of-service condition in RubyLLM::Utils.underscore on Ruby 3.1.x. A very long crafted class, agent, or tool name can cause excessive CPU consumption and a denial of service.