Skip to content
Submit incident
AII-1001-09059
ReportedReported by fewer than three independent publishers, with no official finding.

Pronunciation Bypass Jailbreak Affects Multiple AI Models

A jailbreak vulnerability using "pronunciation bypass" tactics was discovered affecting multiple AI models from Alibaba, Anthropic, DeepSeek, Google, and Mistral. The technique allows attackers to bypass guardrails by instructing models to interpret stylized text phonetically and provide restricted information.

19 February 2026 Β· Alibaba Β· Security and cyberattacks
19 February 2026
AII-1001-09059View 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 flaw manifests when an attacker instructs the model to interpret stylized text based on pronunciation rather than spelling, combined with a directive to provide detailed production information.

Reported impact

The technique allows attackers to bypass inference restrictions around providing information hazards and violating laws.

Classification

Category
Security and cyberattacks
Harm status
Potential harm
Intent
Unknown
Timing
Post-deployment
Harm types
Other
Harmed
General public
Failure modes
Jailbreak, Content moderation failure
Consequences
None recorded
AI systems
Alibaba Qwen Plus, Claude 3.5 Haiku, DeepSeek R1, Gemini 2.5 Pro, Mistral Large

Sources and evidence

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

0din.ai
0din.ai Disclosure