CVE-2025-49651: Backend.AI Missing Authorization vulnerability

June 9, 2025 (updated January 21, 2026)

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.

References

github.com/advisories/GHSA-h889-475r-wfmm
github.com/lablup/backend.ai
github.com/lablup/backend.ai/pull/7587
hiddenlayer.com/sai_security_advisor/2025-05-backendai-49653
hiddenlayer.com/sai_security_advisor/2025-06-backendai
nvd.nist.gov/vuln/detail/CVE-2025-49651

Code Behaviors & Features

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