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  5. CVE-2025-49652

CVE-2025-49652: BackendAI Missing Authentication for Critical Function

June 9, 2025 (updated January 20, 2026)

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.

References

  • github.com/advisories/GHSA-ww28-4m4v-cq4j
  • github.com/lablup/backend.ai
  • github.com/lablup/backend.ai/commit/37fc8f70f9bad2dd01fe2e288f9006e96f9914ed
  • github.com/lablup/backend.ai/commit/b6d3ddd9e285a7ce59722a37585b9298681eb82f
  • github.com/lablup/backend.ai/commit/d7704f506e319acff205d91bfca6e2ca92939983
  • hiddenlayer.com/sai_security_advisor/2025-05-backendai-49653
  • hiddenlayer.com/sai_security_advisor/2025-06-backendai
  • nvd.nist.gov/vuln/detail/CVE-2025-49652

Code Behaviors & Features

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Affected versions

All versions starting from 25.16.0rc1 before 25.19.0rc1, all versions before 25.15.6

Fixed versions

  • 25.15.6
  • 25.19.0rc1

Solution

Upgrade to versions 25.15.6, 25.19.0rc1 or above.

Impact 9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-306: Missing Authentication for Critical Function

Source file

pypi/backend.ai/CVE-2025-49652.yml

Spotted a mistake? Edit the file on GitLab.

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