CVE-2026-49950
CVE-2026-49950 · Xorbits Xoscar 0.11.2 Unauthenticated Deserialization RCE via Actor Pool
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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.
CVSS 9.3 · Kritisch · EPSS 0,9%
- Veröffentlicht
- Aktualisiert
Betroffene Produkte und Versionen
xoscar
- Softwareversionen
- ≥ 0.1.0, ≤ 0.11.2: Betroffen (semver)
Keine Korrektur veröffentlicht
Originalquellen
- https://github.com/xorbitsai/xoscar/blob/v0.11.2/python/xoscar/serialization/core.pyx#L260
- https://github.com/xorbitsai/xoscar/blob/v0.11.2/python/xoscar/backends/communication/socket.py#L99-L104
- https://www.vulncheck.com/advisories/xorbits-xoscar-unauthenticated-deserialization-rce-via-actor-pool
- https://www.vulncheck.com/blog/xorbits-xoscar-unauth-cloudpickle-rce
- https://nvd.nist.gov/vuln/detail/CVE-2026-49950