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Semantic Chaining Jailbreak Bypasses Grok 4 and Gemini Nano Security Filters

First seen 30 Jan 2026, 03:52 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

NeuralTrust researchers have disclosed a new vulnerability known as Semantic Chaining that affects multimodal AI models, specifically Grok 4 and Gemini Nano Banana Pro. This vulnerability allows attackers to bypass security filters through a multi-stage prompting technique, enabling the generation of prohibited text and visual content by exploiting flaws in intent-tracking across chained instructions.

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