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CVE

CVE-2025-32435

Hydra is a Continuous Integration service for Nix based projects. Evaluation of untrusted non-flake nix code could poten

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.

LOW · CVSS 2.6 EPSS 0.00367
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
▤

Affected Products & Versions

1
nixos hydra< 2025-04-11
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighHackTool - Hydra Password Bruteforce Execution
▣

Scoring & Timeline

2.6
LOW · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD15 Apr 2025 · 11:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/NixOS/hydra/commit/8d750265135b7e203520036a742afdf301b4013fPatch
https://github.com/NixOS/hydra/security/advisories/GHSA-j7w7-965w-vjxwVendor Advisory
https://github.com/NixOS/nixpkgs/pull/397919Issue Tracking
https://github.com/nix-community/nix-eval-jobs/releases/tag/v2.28.1Release Notes
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