🛡️ CVE-2023-42448
🟠 CVSS 8.1 — High ✅ No Known Exploit CWE-20 NVD
8.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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 performed in the `checkClose` function of the head validator. This would allow a malicious participant to modify the contestation deadline of the head to either allow them to fanout the head without giving another participant the chance to contest, or prevent any participant from ever redistributing the funds locked in the head via a fan-out. Version 0.13.0 contains a patch for this issue.

Details

Severity HIGH
CVSS Score 8.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CWE CWE-20
Public Exploit ✅ No
Source NVD
Published 2023-10-04
Updated 2026-06-08
Modified 2024-11-21

Affected Packages

Software From version Fixed in
hydra — 0.13.0

References

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