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Product · NixOS

hydra

5 known vulnerabilities.

hydra at a glance

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All Critical High Medium Low Exploited only Public exploit

5 results · Feed

  • Medium 6.9
    CVE-2025-54864

    Hydra missing authentication when triggering evaluations through GitHub and Gitea plugins

    Hydra is a continuous integration service for Nix based projects. Prior to commit f7bda02, /api/push-github and /api/push-gitea are called by the corresponding forge without HTTP Basic authentication. Both forges do however feature HMAC signing with a secret …

    NixOS hydra
  • High 7.1
    CVE-2025-54800

    Hydra persistent XSS in build metrics

    Hydra is a continuous integration service for Nix based projects. Prior to commit dea1e16, a malicious package can introduce arbitrary JavaScript code into the Hydra database that is automatically evaluated in a client's browser when anyone visits the build p…

    NixOS hydra
  • Low 2.6
    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-que…

    NixOS hydra
  • High 7.5
    CVE-2024-45049

    Nix Hydra Missing authentication when triggering evaluations

    Hydra is a Continuous Integration service for Nix based projects. It is possible to trigger evaluations in Hydra without any authentication. Depending on the size of evaluations, this can impact the availability of systems. The problem can be fixed by applyin…

    NixOS hydra
  • Medium 4.6
    CVE-2024-32657

    Hydra has persistent XSS vulnerability serving HTML build outputs

    Hydra is a Continuous Integration service for Nix based projects. Attackers can execute arbitrary code in the browser context of Hydra and execute authenticated HTTP requests. The abused feature allows Nix builds to specify files that Hydra serves to clients.…

    NixOS hydra