CRITICAL 9.3 NVD
CVE-2026-49950
Xorbits Xoscar through 0.11.2 contains an unauthenticated deserialization vulnerability that allows remote attackers to execute arbitrary code by sending crafte
Xorbits Xoscar through 0.11.2 contains an unauthenticated deserialization vulnerability that allows remote attackers to execute arbitrary code by sending crafted data over the actor-pool TCP channel. Attackers can exploit SocketChannel.recv() passing unvalidated data to cloudpickle.loads(), which triggers pickle __reduce__ gadget execution before message type validation, achieving remote code execution as the server process which commonly runs as root on GPU nodes.
References
- https://github.com/xorbitsai/xoscar/blob/v0.11.2/python/xoscar/backends/communication/sock
- https://github.com/xorbitsai/xoscar/blob/v0.11.2/python/xoscar/serialization/core.pyx#L260
- https://www.vulncheck.com/advisories/xorbits-xoscar-unauthenticated-deserialization-rce-vi
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-10-13 via NVD.
Risk Timeline
CVE Disclosed2026-10-13 · -1 days ago
Remediation Resources
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