What Ni8mare Teaches Security Leaders About ShadowAI and Modern Risk | Cyera Blog
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**Executive summary:** Cyera Research Labs details Ni8mare (CVE-2026-21858), a CVSS 10 unauthenticated RCE in the n8n automation platform, highlights the elevated enterprise risk due to centralized high-privilege credentials and ShadowAI exposure, and provides a six-step response playbook covering discovery, containment and patching, credential rotation, hardening, investigation, and downstream blast-radius analysis.
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