{"id":"CVE-2026-67987","revision":"d3bb381745b648eda276954aeebeb790","records":[{"revision":"d3bb381745b648eda276954aeebeb790","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-67987","aliases":[],"title":"crmne/ruby_llm at commit fa6f279847d6d7027814539d9c0dfc3bbdfd2a83 contains polynomial-time regular expression denial-of-service conditions in think-tag response parsing on Ruby 3.1.x. A malicious or anomalous model response containing many …","description":"crmne/ruby_llm at commit fa6f279847d6d7027814539d9c0dfc3bbdfd2a83 contains polynomial-time regular expression denial-of-service conditions in think-tag response parsing on Ruby 3.1.x. A malicious or anomalous model response containing many unterminated <think> tags can cause excessive CPU consumption in two consecutive regular expressions and delay chat-completion processing","state":0,"publishedAt":"2026-09-29T00:00:00+00:00","modifiedAt":"2026-10-01T15:22:56.624+00:00","affected":[{"ecosystem":"Vendor product","name":"n/a","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n/a\",\n                    \"product\": \"n/a\",\n                    \"versions\": [\n                        {\n                            \"version\": \"n/a\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://github.com/crmne/ruby_llm","https://github.com/crmne/ruby_llm/blob/fa6f279847d6d7027814539d9c0dfc3bbdfd2a83/lib/ruby_llm/protocols/chat_completions/chat.rb#L355-L356","https://github.com/crmne/ruby_llm/commit/5e88411f171721b381853fa77d254e266dcf6ad8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-67987","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-67987","identifiers":["CVE-2026-67987"]},"retained":false,"historicalAffected":[]}],"coverage":[]}