[ctx]ctxseccontext security: attacks on the harness and context layer of AI agents, plus exploited-now news, hunting and playbooks.

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confirmed

VMware vCenter CVE-2026-59310 on CISA KEV since Aug 18 (known ransomware use)

Broadcom VMware vCenter path traversal that lets a network-adjacent attacker execute code. CISA added it to KEV on Aug 18 with an Aug 21 federal due date and marks known ransomware campaign use. A separate dark-web monitor also claimed an exploit for sale (~$10k) on Oct 13; treat that as secondary noise. Patch vCenter and keep it off the public internet.

Sources: CISA KEV · Broadcom advisory · NVD · @ptdbugs (sale claim)