Description
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.
Published: 2026-10-13
Score: 9.3 Critical
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Tue, 27 Oct 2026 05:30:00 +0100

Type Values Removed Values Added
First Time appeared Xorbitsai
Xorbitsai xoscar
Vendors & Products Xorbitsai
Xorbitsai xoscar

Fri, 16 Oct 2026 17:30:00 +0200

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 16 Oct 2026 16:45:00 +0200

Type Values Removed Values Added
References

Tue, 13 Oct 2026 22:30:00 +0200

Type Values Removed Values Added
Description 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.
Title Xorbits Xoscar 0.11.2 Unauthenticated Deserialization RCE via Actor Pool
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Xorbitsai Xoscar
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-16T14:30:16.304Z

Reserved: 2026-06-02T16:30:15.232Z

Link: CVE-2026-49950

cve-icon Vulnrichment

Updated: 2026-10-14T17:00:45.999Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T21:17:39.007

Modified: 2026-10-16T18:25:45.343

Link: CVE-2026-49950

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-26T23:39:28Z

Weaknesses
  • CWE-502

    Deserialization of Untrusted Data