Vulnerability · Published Apr 15, 2025 · Assigned by GitHub_M

CVE-2025-32435Hydra no restricted eval after nix-eval-jobs migration

Low 2.6

In plain English

A low-severity security flaw in hydra from NixOS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)2.6Low

Exploit odds (30 days)0.4%top 70.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
NixOS	hydra	< 8d750265135b7e203520036a742afdf301b4013f

Weakness: CWE-95 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N

References

https://github.com/NixOS/hydra/security/advisories/GHSA-j7w7-965w-vjxw x_refsource_CONFIRM
https://github.com/NixOS/nixpkgs/pull/397919 x_refsource_MISC
https://github.com/NixOS/hydra/commit/8d750265135b7e203520036a742afdf301b4013f x_refsource_MISC
https://github.com/nix-community/nix-eval-jobs/releases/tag/v2.28.1 x_refsource_MISC