# CVE-2026-44592

## Summary

- **CVE ID:** CVE-2026-44592
- **Severity:** CRITICAL
- **CVSS Score:** 9.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H)
- **CWE:** CWE-306, CWE-345, CWE-862
- **Published:** May 14, 2026
- **Last Modified:** May 16, 2026

## Description

Gradient is a nix-based continuous integration system. In 1.1.0, when GRADIENT_DISCOVERABLE=true (the default, and the NixOS module default), anyone who can reach /proto can register as a worker without any credentials by sending a fresh, never-registered worker UUID. The resulting session has PeerAuth::Open, i.e. it sees jobs from every organisation, and can immediately NarPush/NarUploaded arbitrary store paths into nar_storage and the cached_path table. This vulnerability is fixed in 1.1.1.

## Affected Products

- wavelens — gradient (1.1.0)

## References

- [CNA](https://github.com/wavelens/gradient/security/advisories/GHSA-49w6-gf3p-96m2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.16%
- **EPSS Percentile:** 5.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._