Newsn8n Critical RCE CVE-2026-21858 CVSS 10.0 Ni8mareCSO Online·high signalCVSS 10.0 unauthenticated RCE in n8n workflow platform affects 100K servers, content-type confusion enables full host takeoverSourceSource pageCSO Online↳ Follow the threadStack layer / Threat patternArmadin details full sandbox escape in Anthropic's Claude Cowork; Anthropic disputes, silently patchesSiliconANGLEStack layer / Threat patternNSA issues official MCP hardening guidance after Amazon Q auto-execution CVEs (CVSS 8.5) enable AWS credential theftWizStack layer / Threat patternOpenClaw ships broad July 6 platform update: GPT-5.6 support, external harness attach, hardened provider I/OReleasebotStack layer / Threat patternLazy schema loading: stop paying the MCP 'tools tax' by gating tool schemas until neededarXivStack layer / Threat patternPACR-Video Enables Parameter-Efficient Multi-Shot Long-Video ExtrapolationarXivStack layer / Threat pattern'GitLost' Prompt Injection Tricks GitHub's Agentic Workflows Into Leaking Private ReposNoma SecurityStack layer / Threat patternA New Security Category Emerges: Tools That Police the Coding Agent, Not the Code — Snyk's Evo Agentic Development SecuritySiliconANGLEStack layer / Threat pattern'The MCP Governance Illusion' — Why Governing Tools Isn't EnoughCyera / Hacker News