What happened
An April 2026 incident affected Silo V2 on Arbitrum, with public monitoring estimating a loss of about $392,000. SlowMist attributed the event to a combination of oracle misconfiguration and protocol-logic issues, and indicated that the impact was limited to peripheral or experimental contracts rather than the core system.
Public reporting identifies an oracle misconfiguration combined with protocol logic issues. No detailed public postmortem was available at review time to verify the exact vulnerable contract, function, or exploit sequence.
How it happened
The available public record identifies the broad category of failure—an oracle configuration issue combined with protocol logic—but does not publish a complete technical postmortem naming the exact vulnerable contract, function, or transaction sequence. The page therefore preserves that limitation rather than inventing an exploit path. The useful confirmed takeaway is that oracle configuration must be reviewed as executable security-critical code, particularly around experimental deployments and peripheral integrations where monitoring, asset assumptions, or isolation controls may differ from core products.
Protocol details
Evidence
Understand the attack patterns
Build your security review skills
Work through hands-on labs covering real exploit mechanics, review techniques, and defensive patterns.
