Base officials posted on social media X that the Base team received a notification from thirdweb at 9pm Pacific Time on Friday (December 1st), stating that a commonly used open source library had a security vulnerability, affecting some pre-built contracts deployed on Base. Base itself is not affected by this issue, and all funds on Base are currently safe. We immediately responded to understand the nature of the vulnerability and possible mitigation strategies. thirdweb is providing responsive support and mitigation tools to review the security of affected contracts. These mitigation measures may include locking existing contracts and reissuing new versions of NFTs to existing holders. If support is needed, it is recommended to work directly with the thirdweb team to resolve the issue.