CVE-2025-48886

hydra-node dangerously assumes L1 event finality and does not consider failed transactions

Description

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 events as finalized as soon as they are recognized by the node participants making such transactions the target of re-org attacks. The system does not currently consider the fact that failed transactions on the Cardano L1 can indeed appear in blocks because these transactions are so infrequent. This issue has been patched in version 0.22.0.

Category

4.8
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Affected: cardano-scaling hydra
Published at:
Updated at:

References

Link Tags
https://github.com/cardano-scaling/hydra/security/advisories/GHSA-qr9f-mpgf-wp25
https://github.com/cardano-scaling/hydra/commit/2bc6a82ef6dbfa8b94e1c11d55253713065f605e
https://github.com/cardano-scaling/hydra/commit/fb22d968964bf5d5b79227cc845d871147044ce7

Frequently Asked Questions

What is the severity of CVE-2025-48886?
CVE-2025-48886 has been scored as a medium severity vulnerability.
How to fix CVE-2025-48886?
To fix CVE-2025-48886, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-48886 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-48886 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-48886?
CVE-2025-48886 affects cardano-scaling hydra.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.