CVE-2025-32435
Hydra no restricted eval after nix-eval-jobs migration
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
2.6
Hydra no restricted eval after nix-eval-jobs migration
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.
- Record
CVE-2025-32435- CVSS 3.1
- 2.6 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N - Weakness
- CWE-95
- Updated
- 2026-11-02
EUVDEUVD-2025-11469
2.6
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.
- Record
EUVD-2025-11469- CVSS 3.1
- 2.6 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
NVD
2.6
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.
- Record
CVE-2025-32435- CVSS 3.1
- 2.6 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N - Weakness
- CWE-95
- Updated
- 2026-11-02
OSV
2.6
Hydra no restricted eval after nix-eval-jobs migration
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.
- Record
CVE-2025-32435- CVSS 3.1
- 2.6 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N - Weakness
- CWE-95
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-32435 is a low vulnerability (CVSS 2.6) in Nixos Hydra, published April 15, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 29th percentile. No source names a fixed version.
References
github.com/NixOS/hydra/security/advisories/GHSA-j7w7-965w-vjxw
github.com/NixOS/nixpkgs/pull/397919
github.com/NixOS/hydra/commit/8d750265135b7e203520036a742afdf301b4013f
github.com/nix-community/nix-eval-jobs/releases/tag/v2.28.1
github.com/CVEProject/cvelistV5/tree/main/cves/2025/32xxx/CVE-2025-32435.json
nvd.nist.gov/vuln/detail/CVE-2025-32435