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CVE-2026-44592

Full vulnerability record from the local CVENow database.

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.

Severity
CRITICAL
CVSS score
9.4 (v3.1)
Vulnerability status
Deferred
Source identifier
Published
2026-05-14 19:16:38.147000
Last modified
2026-10-26 14:10:00.130000
View original CVE JSON
{
  "id": "CVE-2026-44592",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-14T19:16:38.147",
  "lastModified": "2026-10-26T14:10:00.130",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Gradient es un sistema de integración continua basado en Nix. En la versión 1.1.0, cuando GRADIENT_DISCOVERABLE=true (el valor predeterminado, y el predeterminado del módulo NixOS), cualquiera que pueda acceder a /proto puede registrarse como un trabajador sin credenciales enviando un UUID de trabajador nuevo y nunca antes registrado. La sesión resultante tiene PeerAuth::Open, es decir, ve trabajos de cada organización y puede inmediatamente NarPush/NarUploaded rutas de almacenamiento arbitrarias en nar_storage y la tabla cached_path. Esta vulnerabilidad se corrige en la versión 1.1.1."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "wavelens",
          "product": "gradient",
          "versions": [
            {
              "version": "1.1.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H",
          "baseScore": 9.4,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.5
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-16T00:50:40.449652Z",
          "id": "CVE-2026-44592",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        },
        {
          "lang": "en",
          "value": "CWE-345"
        },
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/wavelens/gradient/security/advisories/GHSA-49w6-gf3p-96m2",
      "source": "[email protected]"
    }
  ]
}