CVE-2025-49651 Missing Authorization for Interactive Sessions
Attackers can hijack active sessions to access or alter data due to missing authorization checks in Lablup BackendAI.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-49651?
CVE-2025-49651 is a high-severity missing authorization vulnerability in Lablup BackendAI, published on 9 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2025-49651?
3 open source packages ship an affected version, including backend-ai and backend.ai.
| Package | Affected | Fixed in |
|---|---|---|
backend-ai PyPI | All versions to 25.3.3 | None |
backend-ai PyPI | All versions to 25.3.3 | None |
backend.ai PyPI | All versions to 25.3.3 | None |
How do I fix CVE-2025-49651?
No fix has been published for CVE-2025-49651 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-49651 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-49651 exists.
Sources
Also known as GHSA-h889-475r-wfmm, PYSEC-2026-1210.