{"data":{"id":"21ce3dad-84f8-41a6-8c1f-658715ee9989","title":"Quoting Claude Opus 5 system prompt","summary":"Claude Opus 5's system prompt (the underlying instructions that guide how the AI behaves) includes a notice about export control suspensions that affected two Claude models in June 2026. The prompt instructs Claude to acknowledge these events accurately if asked, treat the topic fairly like any other current event, and direct users to Anthropic's official statement for more details.","solution":"N/A -- no mitigation discussed in source.","labels":["safety"],"sourceUrl":"https://simonwillison.net/2026/Aug/9/claude-opus-5-system-prompt/","publishedAt":"2026-08-09T23:31:39.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedVendors":["Anthropic"],"affectedVendorsRaw":["Anthropic","Claude Opus 5","Claude Fable 5","Claude Mythos 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":"2026-08-09T23:31:39.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":null,"aiComponentTargeted":"model","llmSpecific":true,"classifierConfidence":0.85,"researchCategory":null,"atlasIds":null}}