Online reports that the Solana Foundation announced that a serious "zero-day" vulnerability that affected confidential transmission capabilities on its network has been successfully fixed. The vulnerability was discovered on April 16, and the foundation immediately secretly organized verifiers to coordinate network updates and completed the repair work within two days. This vulnerability involves the ZK certification system used to verify the confidential transfer of Token-2022 standard tokens. If used, attackers could theoretically minte specific tokens indefinitely through forged certificates or steal these tokens from user accounts. The Solana Foundation said it did not disclose the vulnerability until the fix was completed to ensure security. There is currently no evidence that the vulnerability was actually exploited and all user funds are safe. At the same time, it was pointed out that although the confidential transfer function has been online for some time, the current adoption rate is not high.