{"id":"INC-anthropic-lqhknfdjrcst","kind":"incident","aliases":[],"related":[],"title":"Anthropic: Elevated errors for Claude Sonnet 5.5","description":"The issue affecting claude.ai, the Claude API, Claude Code, and Claude Cowork has been resolved. Impact occurred from 07:42 PT / 14:42 UTC to 08:17 PT / 15:17 UTC.","summary":null,"severity":"high","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Anthropic","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["ai","anthropic","incident","llm","ops","vendor"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"resolved","published_at":"2026-10-27T15:09:08+00:00","first_seen_at":"2026-10-27T15:09:56+00:00","triaged_at":"2026-10-27T15:10:28+00:00","updated_at":"2026-10-27T15:52:24+00:00","category":"vendor","confidence":null,"triage":null,"analyst_status":null,"analyst_note":null,"search":"'07':37C '08':44C '14':40C '15':47C '17':45C,48C '42':38C,41C '5.5':7A 'affect':21C 'ai':13B 'anthrop':1A,14B 'anthropic':10A,12A 'api':25C 'claud':5A,24C,26C,29C 'claude.ai':22C 'code':27C 'cowork':30C 'elev':2A 'error':3A 'impact':34C 'inc':9A 'inc-anthropic-lqhknfdjrcst':8A 'incid':15B 'issu':20C 'llm':16B 'lqhknfdjrcst':11A 'occur':35C 'op':17B 'pt':39C,46C 'resolv':33C 'sonnet':6A 'utc':42C,49C 'vendor':18B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T15:09:08+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"statuspage","external_id":"anthropic:lqhknfdjrcst","url":"https://stspg.io/39x7qh3sd7bd","severity":"high","published_at":"2026-10-27T15:09:08+00:00","modified_at":"2026-10-27T15:50:17+00:00","first_seen_at":"2026-10-27T15:09:56+00:00","fetched_at":"2026-10-27T16:56:24+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}