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Vulnerabilities

Vulnerability · CVE-2025-48886

Hydra is a layer-two scalability solution for Cardano.

Published Jun 19, 2025 · catalog updated Jun 23, 2025 · Hydra is a layer-two

Last checked Oct 26, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-48886. EPSS is 0.31%. Act only if a listed version of Hydra is a layer-two is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Hydra is a layer-two).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium4.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.31%
Remediation
Version ranges on file
Affected products
vendor cardano-scaling hydra < 0.22.0

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 issu

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor cardano-scaling hydra < 0.22.0< 0.22.0

How to fix CVE-2025-48886

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-48886. EPSS is 0.31%. Act only if a listed version of Hydra is a layer-two is installed.

Which versions are affected?

Compare what you have installed with cardano-scaling hydra < 0.22.0 < 0.22.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.31%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 19, 2025 · EUVD

    Detected

    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

  2. Jun 23, 2025 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2025-48886

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-48886

    30-day exploitation probability 0.31%

    first.org
  • EUVDVulnerability recordEUVD-2025-18921

    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 c

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 26, 2026
  • CVE.orgOct 21, 2026
  • EUVDOct 20, 2026