CVE-2025-48886

Hydra is a layer-two scalability solution for Cardano. Prior to version 0.22.0, the process assumes L1 event finality and does not consider failed transactions. Currently, Cardano L1 is monitored for certain events which are necessary for state progression. At the moment, Hydra considers those...

CVE-2025-48886

Hydra, a Layer-2 scaling solution for Cardano, is affected by a vulnerability that arises from assuming L1 finality and neglecting failed transactions. Before version 0.22.0, Hydra treated certain L1 events as finalized as soon as recognized by node participants, making those transactions targets...

Hydra 安全漏洞

Hydra is a Nix open source continuous integration service based on the Nix project. A security vulnerability exists in versions prior to Hydra 0.22.0 that stems from a failed transaction on Cardano L1 that was not considered and could lead to a reorganization attack...

PT-2025-26219 · Hydra · Hydra

Name of the Vulnerable Software and Affected Versions: Hydra versions prior to 0.22.0 Description: Hydra is a layer-two scalability solution for Cardano. The issue arises from the assumption of L1 event finality, where the system does not consider failed transactions on the Cardano L1. This makes...

CVE-2023-42448

Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, the specification states that the contestation period in the datum of the UTxO at the head validator must stay unchanged as the state progresses from Open to Closed Close transaction, but no such check appears to be...

GHSA-QV97-5QR8-2266 Mithril snapshots for Cardano database could be compromised by an adversary

Impact Mithril certification of Cardano database The Mithril network provides certification for snapshots of the Cardano database, enabling users to quickly bootstrap a Cardano node without relying on the slower peer-to-peer synchronization process. To generate a multi-signature, a minimum...

Mithril snapshots for Cardano database could be compromised by an adversary

Impact Mithril certification of Cardano database The Mithril network provides certification for snapshots of the Cardano database, enabling users to quickly bootstrap a Cardano node without relying on the slower peer-to-peer synchronization process. To generate a multi-signature, a minimum...

PT-2025-20320 · Crates.Io · Mithril-Client

Impact Mithril certification of Cardano database The Mithril network provides certification for snapshots of the Cardano database, enabling users to quickly bootstrap a Cardano node without relying on the slower peer-to-peer synchronization process. To generate a multi-signature, a minimum...

CVE-2023-42449

Hydra is the two-layer scalability solution for Cardano. Prior to version 0.13.0, it is possible for a malicious head initializer to extract one or more PTs for the head they are initializing due to incorrect data validation logic in the head token minting policy which then results in an flawed...

Design/Logic Flaw

Hydra is the two-layer scalability solution for Cardano. Prior to version 0.13.0, it is possible for a malicious head initializer to extract one or more PTs for the head they are initializing due to incorrect data validation logic in the head token minting policy which then results in an flawed...

CVE-2023-38701

Hydra is the layer-two scalability solution for Cardano. Users of the Hydra head protocol send the UTxOs they wish to commit into the Hydra head first to the commit validator, where they remain until they are either collected into the head validator or the protocol initialisation is aborted and t...

CVE-2023-42448

Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, the specification states that the contestation period in the datum of the UTxO at the head validator must stay unchanged as the state progresses from Open to Closed Close transaction, but no such check appears to be...

Design/Logic Flaw

Hydra is the layer-two scalability solution for Cardano. Users of the Hydra head protocol send the UTxOs they wish to commit into the Hydra head first to the commit validator, where they remain until they are either collected into the head validator or the protocol initialisation is aborted and t...

Design/Logic Flaw

Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, the specification states that the contestation period in the datum of the UTxO at the head validator must stay unchanged as the state progresses from Open to Closed Close transaction, but no such check appears to be...

CVE-2023-42449 Malicious head initialiser can extract PTs from control of Hydra scripts, leading to locked participant commits or spoofed commits

Hydra is the two-layer scalability solution for Cardano. Prior to version 0.13.0, it is possible for a malicious head initializer to extract one or more PTs for the head they are initializing due to incorrect data validation logic in the head token minting policy which then results in an flawed...

CVE-2023-42449

Hydra (Cardano) prior to v0.13.0 has an input validation flaw in the head initialiser that lets a malicious head initialiser extract PTs for the head being initialised, bypassing checks in HeadTokens.hs and off‑chain code. This can enable the attacker to lock other participants’ committed funds (...

CVE-2023-42449 Malicious head initialiser can extract PTs from control of Hydra scripts, leading to locked participant commits or spoofed commits

Hydra is the two-layer scalability solution for Cardano. Prior to version 0.13.0, it is possible for a malicious head initializer to extract one or more PTs for the head they are initializing due to incorrect data validation logic in the head token minting policy which then results in an flawed...

CVE-2023-42449 Malicious head initialiser can extract PTs from control of Hydra scripts, leading to locked participant commits or spoofed commits

Hydra is the two-layer scalability solution for Cardano. Prior to version 0.13.0, it is possible for a malicious head initializer to extract one or more PTs for the head they are initializing due to incorrect data validation logic in the head token minting policy which then results in an flawed...

CVE-2023-42448 Hydra's contestation period in head datum can be modified during Close transaction, allowing malicious participant to freely modify the contestation deadline

Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, the specification states that the contestation period in the datum of the UTxO at the head validator must stay unchanged as the state progresses from Open to Closed Close transaction, but no such check appears to be...

CVE-2023-42448 Hydra's contestation period in head datum can be modified during Close transaction, allowing malicious participant to freely modify the contestation deadline

Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, the specification states that the contestation period in the datum of the UTxO at the head validator must stay unchanged as the state progresses from Open to Closed Close transaction, but no such check appears to be...