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.
CVE-2025-32435
This low-severity CVE scores 2.6 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 2.6
- EG Score
- 2.6(low)
- EPSS
- 21.3%
- KEV
- Not listed
Published
April 15, 2025
Last Modified
September 22, 2025
References (4)
- security-advisories@githubhttps://github.com/NixOS/hydra/commit/8d750265135b7e203520036a742afdf301b4013f
- security-advisories@githubhttps://github.com/NixOS/hydra/security/advisories/GHSA-j7w7-965w-vjxw
- security-advisories@githubhttps://github.com/NixOS/nixpkgs/pull/397919
- security-advisories@githubhttps://github.com/nix-community/nix-eval-jobs/releases/tag/v2.28.1
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 48× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-22 14:07 UTCEPSS rescore
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- 2026-07-21 15:24 UTCEPSS rescore
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- 2026-07-07 13:45 UTCEPSS rescore
- 2026-07-06 16:27 UTCEPSS rescore
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- 2026-07-06 04:32 UTCOSV refresh
- 2026-07-06 02:22 UTCEPSS rescore
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- 2026-06-19 19:25 UTCEPSS rescore
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- 2026-06-18 17:52 UTCEPSS rescore
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- 2026-06-17 17:52 UTCEPSS rescore
- 2026-06-17 15:35 UTCOSV refresh
- 2026-06-16 17:52 UTCEPSS rescore
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- 2026-06-15 17:48 UTCEPSS rescore
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- 2026-06-11 13:59 UTCEPSS rescore
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- 2026-06-08 14:16 UTCEPSS rescore
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- 2026-06-07 15:24 UTCEPSS rescore
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- 2026-06-06 13:47 UTCEPSS rescore
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- 2026-05-29 13:44 UTCEPSS rescore
- 2026-05-29 13:26 UTCEG score recompute
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10 shownCWE-95
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Frequently asked(5)
What is CVE-2025-32435?
When was CVE-2025-32435 disclosed?
Is CVE-2025-32435 actively exploited?
What is the CVSS score of CVE-2025-32435?
How do I remediate CVE-2025-32435?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2025-32435
Is Your Infrastructure Affected by CVE-2025-32435?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.