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Vulnerabilities

Vulnerability · CVE-2025-32435

Hydra is a Continuous Integration service for Nix based projects.

Published Apr 15, 2025 · catalog updated Apr 16, 2025 · NixOS

Check if you run it

No confirmed exploitation is on record for CVE-2025-32435. EPSS is 0.36%. Act only if a listed version of NixOS is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low2.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.36%
Remediation
Version ranges on file
Affected products
vendor NixOS hydra < 8d750265135b7e203520036a742afdf301b4013f

Hydra is a Continuous Integration service for Nix based projects. Evaluation of untrusted non-flake nix code could potentially access secrets that are accessible by the hydra user/group. This should not affect the signing keys, that are owned by the hydra-queue-runner and hydra-www users respectively.

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 NixOS hydra < 8d750265135b7e203520036a742afdf301b4013f< 8d750265135b7e203520036a742afdf301b4013f

How to fix CVE-2025-32435

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-2025-32435. EPSS is 0.36%. Act only if a listed version of NixOS is installed.

Which versions are affected?

Compare what you have installed with NixOS hydra < 8d750265135b7e203520036a742afdf301b4013f < 8d750265135b7e203520036a742afdf301b4013f. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.36%. 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. Apr 15, 2025 · EUVD

    Detected

    Hydra is a Continuous Integration service for Nix based projects. Evaluation of untrusted non-flake nix code could potentially access secrets that are accessible by the hydra user/group. This should not affect the signing keys, that are owned by the hydra-queue-runner and hydra-www users respectively.

  2. Apr 16, 2025 · EUVD

    Updated

    Hydra is a Continuous Integration service for Nix based projects. Evaluation of untrusted non-flake nix code could potentially access secrets that are accessible by the hydra user/group. This should not affect the signing keys, that are owned by the hydra-queue-runner and hydra-www users respectively.

Sources

  • CVE.orgVulnerability recordCVE-2025-32435

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-32435

    30-day exploitation probability 0.4%

    first.org
  • EUVDVulnerability recordEUVD-2025-11469

    Hydra is a Continuous Integration service for Nix based projects. Evaluation of untrusted non-flake nix code could potentially access secrets that are accessible by the hydra user/group. This should not affect the signing keys, that are owned by the hydra-queue-runner and hydra-w

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.