Backend.AI Missing Authorization vulnerability
Missing Authorization in Lablup's BackendAI allows attackers to takeover all active sessions; Accessing, stealing, or altering any data accessible in the session. This vulnerability exists in all current versions of BackendAI.
NOTE: The maintainers of BackendAI do not consider this report to fit with their threat model and advise users to follow security advice from https://github.com/lablup/backend.ai/pull/7587 in their instances to protect themselves from the conditions that would lead to the situation described in the CVE record.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | backend-ai | <= 25.3.3 | no fix |
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-49651
- https://github.com/lablup/backend.ai/pull/7587
- https://github.com/lablup/backend.ai
- https://hiddenlayer.com/sai_security_advisor/2025-05-backendai-49653
- https://hiddenlayer.com/sai_security_advisor/2025-06-backendai
- https://pypi.org/project/backend-ai
- https://github.com/advisories/GHSA-h889-475r-wfmm
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-862- Platform
- Python (PyPI)
- Package
backend-ai- Disclosed
- 09.06.2025
- Updated
- 11.10.2026 13:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-1210 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-h889-475r-wfmm - CC BY 4.0
Vulnerability history: backend-ai
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 06.2025 06.2025
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 2
Disclosures per year
- 2025: 3
- 2026: 0
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