{"id":"CVE-2026-86986","kind":"vulnerability","aliases":["CVE-2026-86986"],"related":[],"title":"Safari: use-after-free lets crafted web content crash the browser","description":"A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 27.2, iOS 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, visionOS 27.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.","summary":"A use-after-free flaw in Safari lets maliciously crafted web content crash the browser. The sources describe a crash only, not code execution or data access.","severity":"low","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","ios","ipados","macos","safari","visionos"],"not_affected_if":["patched-version"],"how_to_check":"- Check the Safari version under Safari > About Safari on macOS, or the iOS and iPadOS version under Settings > General > About.","fix":"- Update Safari to `27.2` on macOS Golden Gate, or update iOS and iPadOS to `26.7.2` or `27.2`, and visionOS to `27.2`, per the vendor note.","status":"open","published_at":"2026-10-26T21:20:37+00:00","first_seen_at":"2026-10-26T21:55:22+00:00","triaged_at":"2026-10-26T21:56:32+00:00","updated_at":"2026-10-26T21:56:32+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-26T21:56:32Z","model":"claude-haiku-5-5","output":{"fix":"- Update Safari to `27.2` on macOS Golden Gate, or update iOS and iPadOS to `26.7.2` or `27.2`, and visionOS to `27.2`, per the vendor note.","reach":"internet","title":"Safari: use-after-free lets crafted web content crash the browser","impact":"low","summary":"A use-after-free flaw in Safari lets maliciously crafted web content crash the browser. The sources describe a crash only, not code execution or data access.","category":"infrastructure","nicknames":[],"who_cares":["safari","ios","ipados","macos","visionos"],"confidence":0.6,"needs_auth":"no","worst_case":"Safari crashes when the user opens malicious web content.","analyst_note":"","how_to_check":"- Check the Safari version under Safari > About Safari on macOS, or the iOS and iPadOS version under Settings > General > About.","needs_analyst":false,"not_affected_if":["patched-version"],"who_is_affected":"Anyone using Safari or an iOS, iPadOS, macOS or visionOS build older than the fixed versions, when they open untrusted web content. Systems that do not run these builds can skip it.","user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"low"},"cost_usd":0.000552,"input_tokens":3317,"output_tokens":441,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-86986':15A,18A '26.7.2':73C,76C '27.2':71C,78C,81C,85C,87C 'access':52B 'address':60C 'browser':12A,40B 'code':48B 'content':9A,37B,92C 'craft':7A,35B,90C 'crash':10A,38B,45B,99C 'cve':13A,16A 'data':51B 'describ':43B 'execut':49B 'fix':68C 'flaw':30B 'free':5A,29B,57C 'gate':84C 'golden':83C 'improv':62C 'infrastructur':19B 'io':20B,72C,77C 'ipado':21B,75C,80C 'issu':58C,66C 'lead':94C 'let':6A,33B 'maco':22B,82C 'malici':34B,89C 'manag':64C 'may':93C 'memori':63C 'process':88C 'safari':1A,23B,32B,70C,98C 'sourc':42B 'unexpect':97C 'use':3A,27B,55C 'use-after-fre':2A,26B,54C 'visiono':24B,86C 'web':8A,36B,91C","nicknames":[],"mitigations":[],"who_affected":"Anyone using Safari or an iOS, iPadOS, macOS or visionOS build older than the fixed versions, when they open untrusted web content. Systems that do not run these builds can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-26T21:20:37+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-86986","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86986","severity":null,"published_at":"2026-10-26T21:20:37+00:00","modified_at":"2026-10-26T21:20:37+00:00","first_seen_at":"2026-10-26T21:55:22+00:00","fetched_at":"2026-10-26T21:55:22+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"}