{"data":{"id":"1a7b49fc-071e-4b72-ba7d-d57b696e51f6","title":"llm-echo 0.5a0","summary":"llm-echo 0.5a0 is a debug plugin (a tool that helps developers test code) for LLM that provides a fake AI model called \"echo\" for testing purposes instead of running a real LLM. The new version adds a \"-o thinking 1\" option to simulate reasoning blocks (the internal steps an AI uses to work through problems) and is compatible with LLM 0.32a0 and higher.","solution":"N/A -- no mitigation discussed in source.","labels":["industry"],"sourceUrl":"https://simonwillison.net/2026/May/5/llm-echo/#atom-everything","publishedAt":"2026-05-05T01:31:54.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedVendors":[],"affectedVendorsRaw":["llm-echo","llm","OpenAI"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"patchAvailable":null,"disclosureDate":"2026-05-05T01:31:54.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":null,"aiComponentTargeted":null,"llmSpecific":true,"classifierConfidence":0.75,"researchCategory":null,"atlasIds":null}}