{"apiVersion":"1.0","identifier":"CVE-2026-67991","description":"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.","publishedAt":"2026-08-13T14:17:11","lastModifiedAt":"2026-08-13T16:18:48","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-67991","cvssScore":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","epssProbability":0.0036,"riskScore":0.77,"affectedProduct":"ruby_llm","affectedVersions":"unknown","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-67991","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-67991","en":"https://www.redsauce.net/en/cves/CVE-2026-67991","fr":"https://www.redsauce.net/fr/cves/CVE-2026-67991","pt":"https://www.redsauce.net/pt/cves/CVE-2026-67991","de":"https://www.redsauce.net/de/cves/CVE-2026-67991","sk":"https://www.redsauce.net/sk/cves/CVE-2026-67991","el":"https://www.redsauce.net/el/cves/CVE-2026-67991"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-67991"}}