CVE-2025-32435— Hydra no restricted eval after nix-eval-jobs migration
Quick assessment
Affected
NixOS hydra
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Hydra是Nix开源的一个基于Nix项目的持续集成服务。 Hydra存在安全漏洞，该漏洞源于评估不可信的非flake nix代码可能访问hydra用户组的秘密。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-32435
Vulnerability Information
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Vulnerability Title
Hydra no restricted eval after nix-eval-jobs migration
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Hydra 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hydra是Nix开源的一个基于Nix项目的持续集成服务。 Hydra存在安全漏洞，该漏洞源于评估不可信的非flake nix代码可能访问hydra用户组的秘密。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-32435
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Patches & Fixes for CVE-2025-32435 (2)
Vendor Advisories for CVE-2025-32435 (1)
Vendor Pages for CVE-2025-32435 (1)
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Release v2.28.1 · nix-community/nix-eval-jobs · GitHub x_refsource_MISC
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V. Comments for CVE-2025-32435
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