{"id":"INC-circleci-xc1s7vqky9rd","kind":"incident","aliases":[],"related":[],"title":"CircleCI: Delays starting macOS jobs that use Xcode 26.6.0","description":"Between approximately 14:00 UTC and 15:51 UTC on October 14, customers running macOS jobs that use Xcode 26.6.0 or Xcode 26.4 experienced delays starting jobs. From approximately 14:00 UTC, jobs that use Xcode 26.6.0 on the M4 Pro large resource class waited 30 minutes or more to start, and these delays recovered at approximately 15:12 UTC. From approximately 15:11 UTC, jobs that use Xcode 26.4 waited about 30 minutes to start. \n\nThe issue has been resolved and all affected functionality has returned to normal. We thank you for your patience while our team worked on implementing a fix.","summary":null,"severity":"medium","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"CircleCI","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["ci","circleci","incident","ops","vendor"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"resolved","published_at":"2026-10-14T14:47:48+00:00","first_seen_at":"2026-10-23T19:12:22+00:00","triaged_at":"2026-10-23T20:17:58+00:00","updated_at":"2026-10-23T20:17:58+00:00","category":"vendor","confidence":null,"triage":null,"analyst_status":null,"analyst_note":null,"search":"'00':23C,50C '11':83C '12':78C '14':22C,31C,49C '15':26C,77C,82C '26.4':42C,89C '26.6.0':9A,39C,56C '30':65C,92C '51':27C 'affect':103C 'approxim':21C,48C,76C,81C 'ci':15B 'circleci':1A,12A,14A,16B 'class':63C 'custom':32C 'delay':2A,44C,73C 'experienc':43C 'fix':122C 'function':104C 'implement':120C 'inc':11A 'inc-circleci-xc1s7vqky9rd':10A 'incid':17B 'issu':97C 'job':5A,35C,46C,52C,85C 'larg':61C 'm4':59C 'maco':4A,34C 'minut':66C,93C 'normal':108C 'octob':30C 'op':18B 'patienc':114C 'pro':60C 'recov':74C 'resolv':100C 'resourc':62C 'return':106C 'run':33C 'start':3A,45C,70C,95C 'team':117C 'thank':110C 'use':7A,37C,54C,87C 'utc':24C,28C,51C,79C,84C 'vendor':19B 'wait':64C,90C 'work':118C 'xc1s7vqky9rd':13A 'xcode':8A,38C,41C,55C,88C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-14T14:47:48+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"statuspage","external_id":"circleci:xc1s7vqky9rd","url":"https://stspg.io/nhpcykblrb28","severity":"medium","published_at":"2026-10-14T14:47:48+00:00","modified_at":"2026-10-14T16:01:16+00:00","first_seen_at":"2026-10-23T19:12:22+00:00","fetched_at":"2026-10-26T00:44:51+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"}