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AII-1001-09047
ReportedReported by fewer than three independent publishers, with no official finding.

Multiple Model Guardrail Jailbreak via Chaotic Formatting

A jailbreak vulnerability affecting multiple large language models was discovered that uses chaotic formatting and meta-instruction obfuscation to bypass safety guardrails around information hazards and legal restrictions. Testing showed varying susceptibility across the affected models.

19 February 2026 Β· Alibaba Β· Security and cyberattacks
19 February 2026
AII-1001-09047View source β†—
Quick facts
Category
Security and cyberattacks
Source
0din.ai
Date
19 February 2026
Drafted by
Raidu Incident Detection

What happened

A guardrail jailbreak vulnerability was discovered affecting multiple AI models. The vulnerability uses a combination of chaotic formatting and meta-instruction obfuscation to bypass inference restrictions around providing information hazards and violating laws.

Index analysis

The vulnerability was tested against five models: Alibaba Qwen Plus, Alibaba Qwen Turbo, DeepSeek R1, Meta LLaMa 3.3, and Mistral 8B. Meta LLaMa 3.3 showed the highest susceptibility with a score of 91 on the illegal substances category, while DeepSeek R1 showed the lowest at 64.

Classification

Category
Security and cyberattacks
Harm status
Potential harm
Intent
Unknown
Timing
Unknown
Failure modes
Jailbreak, Content moderation failure
Consequences
None recorded
AI systems
Alibaba Qwen Plus, Alibaba Qwen Turbo, DeepSeek R1, Meta LLaMa 3.3, Mistral 8B

Sources and evidence

This record was researched and written by the Index, based on the following original reporting.

0din.ai
0din.ai Disclosure