Anthropic opens Claude Duet research preview - proactive Claude that watches your work apps
AspireAI · Anthropic
Anthropic opened a research preview of Claude Duet on October 21, 2026. Built on Claude Opus 5.5, it is a standalone app on iOS, Android and claude.ai, available via waitlist to US Pro and Max subscribers. Instead of waiting for prompts, Duet sends a morning brief from your connected apps, then keeps tabs on them through the day and only messages you when something needs attention. It can also take real work - scheduling meetings, building dashboards, drafting outreach, running payroll, chasing invoices. It draws on about 6,000 connectors via the Claude Marketplace (Gmail, Slack, Stripe, Shopify, HubSpot, DocuSign, Canva, Microsoft 365 and more). Before sending a message, paying, signing or deleting, Duet stops and asks. Trading securities and money moves between accounts stay blocked even with approval. A new classifier blocks leaks of credit card numbers and government IDs. Limits: research preview, US-only, Pro/Max plans only, no Team or Enterprise yet.
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Two critical PHP remote code execution flaws — one found by GPT-5.6 Sol — were patched on October 21, 2026, and OpenAI published a disclosure framework alongside the fix. Fixed versions: PHP 8.5.12, 8.4.27, 8.3.36 and 8.2.35. Both allow unauthenticated remote code execution, and PHP's advisory says risk is highest for mod_php, where a demonstrated exploit triggers before any application code runs. The CVEs are distinct failure modes. CVE-2026-109618 (OOM corruption): out-of-memory handling can interrupt PHP while internal request data is only partially initialized, and request cleanup may then treat the invalid data as valid. CVE-2026-109619 (stale global state): request-owned internal state can survive after its backing memory is freed, and a later request served by the same worker may use that stale state. OpenAI states GPT-5.6 Sol identified the first flaw through its Patch the Planet initiative, and that Wiz independently discovered and reported both vulnerabilities. PHP's maintainers led the fixes and release, with Wiz, Cloudflare and OpenAI contributing research and coordination. Wiz's write-up adds that it used GPT-5.6 Sol and Gemini 4 Argon throughout, with Gemini 4 Argon contributing to finding the vulnerability and validating the patch. OpenAI describes the gap between discovery and public exploitation as a "Defender's Window," proposes a five-stage response framework, and committed $1 billion in subsidised Daybreak model access for organizations with limited security resources. Honest caveats: these are OpenAI's and Wiz's own characterizations, and OpenAI also notes the same capabilities help attackers build offensive tooling faster. PHP 8.1 and older no longer receive updates from the PHP project.