F5 Labs CASI Leaderboard: Sugar-Coated Poison LLM attack and AI tooling flaws in Copilot, OpenClaw (CVE-2026-25253) and Claude Code (CVE-2026-21852)
F5 Labs published its March 2026 CASI Leaderboard update, which is now dominated by OpenAI and Anthropic. Z.ai's GLM-5 performs well on price and capability but has a weak security posture (CASI 37.56 vs 96.61 for Claude Opus 4.6 and 92.58 for GPT-5.2). The report also spotlights Sugar-Coated Poison (SCP), a multi-turn technique that grad…