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Conflux has announced that its security team successfully resolved a critical vulnerability in the CREATE2 opcode with the release of its version 2.5 network upgrade. The issue, initially identified by the ecosystem team GraFun, was patched following a collaborative effort to enhance the platform’s security and maintain user trust.

Understanding the CREATE2 Opcode Vulnerability

The vulnerability, which was detected in February 2025, stemmed from the CREATE2 opcode, an advanced feature introduced during Ethereum’s Constantinople upgrade in 2019. This opcode is widely used in Ethereum Virtual Machine (EVM)-compatible networks, playing a critical role in enabling smart contract deployment with greater predictability and flexibility.

Conflux highlighted the issue in its previous implementation of CREATE2. Unlike the standard EVM behavior, which prevents redeployment of contracts at an address with an existing contract, Conflux’s system allowed redeployment. This reset the contract state to its initial deployment state, creating potential security risks for applications like Gnosis Safe.

How Conflux Addressed the Issue

The Conflux team swiftly took action, announcing plans for a network upgrade on March 4, 2025. Node operators were instructed to update their systems in preparation for the hard fork, which was successfully completed at epoch 118580000 on March 17, 2025. The version 2.5 upgrade fully addressed the vulnerability and enhanced the platform’s EVM compatibility.

In a statement, the Conflux security team assured users and ecosystem partners that the issue was resolved and emphasized that all user funds remain safe. The proactive measures taken by the team reflect the platform’s commitment to maintaining a secure and reliable blockchain environment.

GraFun’s Contribution and Bounty Reward

The ecosystem team GraFun played a pivotal role in identifying and reporting the CREATE2 opcode vulnerability. For their efforts, GraFun received a total bounty of 60,000 Conflux tokens. This included a base reward of 50,000 tokens for discovering the bug and an additional 10,000 tokens for submitting a timely and detailed report. Their quick action helped prevent potential exploits and safeguarded the network.

Why This Upgrade Matters

The resolution of the CREATE2 opcode vulnerability underscores the importance of continuous monitoring and improvement in blockchain networks. By addressing this issue, Conflux not only ensured the security of its ecosystem but also strengthened its position as a reliable layer-1 blockchain platform.

This upgrade enhances the network’s EVM compatibility, making it more efficient and secure for developers and users alike. With the bug now resolved, Conflux can continue to support a wide range of decentralized applications (dApps) and smart contracts, fostering innovation within the blockchain space.

Key Takeaways for Crypto Enthusiasts

  • Stay informed about network upgrades and updates, as they are crucial for maintaining platform security and functionality.
  • Security vulnerabilities, while rare, highlight the importance of proactive monitoring and collaboration within blockchain ecosystems.
  • Rewards for identifying bugs, such as Conflux’s bounty program, incentivize ethical hacking and contribute to the overall safety of blockchain platforms.

As the cryptocurrency and blockchain industry continues to evolve, platforms like Conflux demonstrate the value of transparency, rapid response, and collaboration in addressing challenges. These efforts pave the way for a more secure and trustworthy crypto ecosystem.

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