According to Odaily Planet Daily, Arbitrum Developers published a post on X stating that the ArbOS 32 upgrade has been completed on Arbitrum One, Nova, and Sepolia. If users are running nodes on these networks and have not yet upgraded, please upgrade the nodes to at least Arbitrum Nitro v3.2.0 immediately. For Validator nodes, please upgrade to v3.2.1.

The upgrade was coordinated with the Security Council, which approved an emergency action to address mispricing issues in Arbitrum Stylus that could lead to denial of service attacks, issues that allowed malicious contracts to crash nodes, and mispricing issues where Stylus contracts were overcharged for SLOAD operations. No funds were at risk.

Additionally, the team will release a full analysis report soon.