Security · 1h ago
Prompt injection is role confusion; MCP gateways blind to it
A new paper reframes prompt injection as role confusion: models obey text that sounds authoritative regardless of structural tags. Forging the model's own reasoning channel raises jailbreak success from ~0% to ~60% across models. Most MCP gateways inspect access, not content, so malicious tool responses flow unread into context.
Meridian48 take
The paper's insight is sharp, but deterministic detection rules are brittle; the real test is whether defenses can keep pace with adaptive attackers.
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Prompt injection is role confusion, and your MCP gateway can't see it →
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