Sepolia Incident

A security threat that existed on the Ethereum network from the Merge until the Dencun hard fork has been disclosed, with the vulnerability specifically manifesting during the Sepolia incident. The disclosure highlights a previously unknown attack vector that could have potentially compromised network security during this critical period.

• →A security vulnerability existed on Ethereum from the Merge upgrade until the Dencun hard fork was implemented.
• →The threat was identified through an incident that occurred on the Sepolia testnet.
• →The vulnerability has since been resolved with the Dencun hard fork implementation.
• →This disclosure reveals the ongoing security challenges faced during major network transitions.
• →The incident demonstrates the importance of testnets in identifying potential mainnet vulnerabilities.