{"data":{"id":"1368a7a4-7df4-4dda-8919-8e96bcde7c97","title":"Quoting OpenAI Codex base_instructions","summary":"OpenAI Codex base_instructions for GPT-5.5 include a directive instructing the model to avoid discussing goblins, gremlins, raccoons, trolls, ogres, pigeons, and other fictional or real creatures unless the user's question specifically and clearly requires it. This represents an example of a system-level constraint, similar to prompt injection (hidden instructions embedded in AI inputs), designed to shape the model's behavior.","solution":"N/A -- no mitigation discussed in source.","labels":["safety"],"sourceUrl":"https://simonwillison.net/2026/Apr/28/openai-codex/#atom-everything","publishedAt":"2026-04-28T22:02:53.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedVendors":["OpenAI"],"affectedVendorsRaw":["OpenAI","Codex","GPT-5.5"],"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":"2026-04-28T22:02:53.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["safety"],"aiComponentTargeted":"model","llmSpecific":true,"classifierConfidence":0.65,"researchCategory":null,"atlasIds":null}}