GHSA-WW28-4M4V-CQ4J

Vulnerability from github – Published: 2025-06-09 18:32 – Updated: 2026-01-20 18:50
VLAI
Summary
BackendAI Missing Authentication for Critical Function
Details

Missing Authentication in the registration feature of Lablup's BackendAI allows arbitrary users to create user accounts that can access private data even when registration is disabled.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "backend.ai"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "25.15.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "backend.ai"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "25.16.0rc1"
            },
            {
              "fixed": "25.19.0rc1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-49652"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-06-11T17:37:45Z",
    "nvd_published_at": "2025-06-09T18:15:26Z",
    "severity": "CRITICAL"
  },
  "details": "Missing Authentication in the registration feature of Lablup\u0027s BackendAI allows arbitrary users to create user accounts that can access private data even when registration is disabled.",
  "id": "GHSA-ww28-4m4v-cq4j",
  "modified": "2026-01-20T18:50:59Z",
  "published": "2025-06-09T18:32:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-49652"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lablup/backend.ai/commit/37fc8f70f9bad2dd01fe2e288f9006e96f9914ed"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lablup/backend.ai/commit/b6d3ddd9e285a7ce59722a37585b9298681eb82f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lablup/backend.ai/commit/d7704f506e319acff205d91bfca6e2ca92939983"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/lablup/backend.ai"
    },
    {
      "type": "WEB",
      "url": "https://hiddenlayer.com/sai_security_advisor/2025-05-backendai-49653"
    },
    {
      "type": "WEB",
      "url": "https://hiddenlayer.com/sai_security_advisor/2025-06-backendai"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "BackendAI Missing Authentication for Critical Function"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.