CVE-2026-26210

KTransformers through 0.5.3 contains an unsafe deserialization vulnerability in the balance_serve backend mode where the scheduler RPC server binds a ZMQ ROUTER socket to all interfaces with no authentication and deserializes incoming messages using pickle.loads() without validation. Attackers can send a crafted pickle payload to the exposed ZMQ socket to execute arbitrary code on the server with the privileges of the ktransformers process.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://chocapikk.com/posts/2026/ktransformers-pickle-rce/	Exploit Mitigation Third Party Advisory
https://github.com/kvcache-ai/ktransformers/pull/1944	Issue Tracking Patch
https://www.vulncheck.com/advisories/ktransformers-unsafe-deserialization-rce-via-balance-serve	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:kvcache-ai:ktransformers:*:*:*:*:*:*:*:*

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) KTransformers hasta 0.5.3 contiene una vulnerabilidad de deserialización insegura en el modo de backend balance_serve donde el servidor RPC del planificador enlaza un socket ZMQ ROUTER a todas las interfaces sin autenticación y deserializa los mensajes entrantes usando pickle.loads() sin validación. Los atacantes pueden enviar una carga útil pickle manipulada al socket ZMQ expuesto para ejecutar código arbitrario en el servidor con los privilegios del proceso ktransformers.

Information

Published : 2026-04-23 22:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-26210

Mitre link : CVE-2026-26210

CVE.ORG link : CVE-2026-26210

JSON object : View

Products Affected

kvcache-ai

ktransformers

CWE

CWE-502

Deserialization of Untrusted Data

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