AI Prompt Injection Vulnerability
Microsoft Copilot inadvertently revealed its secret input prompts, creating a critical information disclosure vulnerability. This prompt leakage allowed adversaries to exploit the AI model's underlying configuration, compromising its intended behavior.
What Happened
Microsoft Copilot inadvertently revealed its secret input prompts, creating a critical information disclosure vulnerability. This prompt leakage allowed adversaries to exploit the AI model's underlying configuration, compromising its intended behavior.
Why This Matters
Current evidence identifies a security issue involving the affected technology, but does not yet support a more specific impact claim.
Recommended Action
No confirmed vendor remediation is available in the current evidence. Confirm whether the affected technology is present in your environment and review the affected configuration.
Exposure
Exposure unknown
Aug 18, 2026 05:30
Exposure reason: This incident does not currently match a technology in My AI Stack.
Exploitation status: UNKNOWN
Primary entities:
Timeline
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Incident first seen
Aug 18, 2026 05:30BugSkan first recorded this incident.
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Microsoft Copilot reveals secret input that allowed it to be hacked - Ars Technica
Aug 18, 2026 05:30arstechnica.com · Research
Sources
arstechnica.com · Aug 18, 2026 05:30
Microsoft Copilot inadvertently revealed its secret input prompts, creating a critical information disclosure vulnerability. This prompt leakage allowed adversaries to exploit the AI model's underlying configuration, compromising its intended behavior.
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