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MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Description
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 key. Triggering an evaluation can be very taxing on the infrastructure when large evaluations are done, introducing potential denial of service attacks on the host running the evaluator. This issue has been patched by commit f7bda02. A workaround involves blocking /api/push-github and /api/push-gitea via a reverse proxy.
Basic Information
ID
CVE-2025-54864
Source
GitHub_M
Published
Aug 12, 2025 at 15:48
Modified
Aug 12, 2025 at 16:06
Affected Product
Vendor
NixOS
Product
hydra
Version
< f7bda020c6144913f134ec616783e57817f7686f
Affected Versions
NixOS hydra < f7bda020c6144913f134ec616783e57817f7686f