CVSS 3.1 Score 8.1 of 10 (high)


Published Oct 4, 2023
Updated: Oct 10, 2023


CVE-2023-42449 is a vulnerability that affects the Hydra two-layer scalability solution for Cardano. Specifically, versions prior to 0.13.0 are susceptible to this issue. The vulnerability allows a malicious head initializer to extract one or more PTs (Plutus Tokens) during the initialization process, due to incorrect data validation logic in the head token minting policy. This flaw can be exploited by removing a PT from the Hydra scripts, preventing other participants from reclaiming their funds committed into the head. The potential danger posed by this vulnerability is significant, as it can lead to financial losses for participants unable to retrieve their funds. To remediate this issue, organizations using Hydra should update to version 0.13.0 or later, which includes fixes for this vulnerability and enhances data validation processes.


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