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-queue-runner and hydra-www users respectively.

Published: 2025-04-15 Last update: 2025-09-22 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-32435 is rated Low Risk (31.1/100): CVSS Low severity, with medium exploitation likelihood (EPSS 0.37%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-32435

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-27 0.22% 0.37% +0.14%
2 2026-05-25 0.25% 0.22% -0.03%
3 2026-05-24 — 0.25% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-32435

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.6 3.1 LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.2 1.4 [email protected]

Weakness enumeration for CVE-2025-32435

OS Trackers for CVE-2025-32435

vendor priority summary link
alpine — CVE-2025-32435: 1 source package rows (hydra); 5 state rows across 3 repos (3.22-community, 3.23-community, edge-community); fixed 0, open 5. https://security.alpinelinux.org/vuln/CVE-2025-32435

Affected software / configurations for CVE-2025-32435

Vendor Product Version Raw CPE
nixos hydra < 2025-04-11 cpe:2.3:a:nixos:hydra:*:*:*:*:*:*:*:*

References for CVE-2025-32435

cvelogic Threat Intelligence