CVE-2026-69098

kotaemon through 0.12.0 contains an insecure deserialization vulnerability in the check_connection endpoint that allows unauthenticated attackers to instantiate arbitrary Python classes by supplying crafted YAML/JSON input with a __type__ field. Attackers can exploit this to override the __type__ field with subprocess.check_output and arbitrary arguments, achieving remote code execution with application process privileges.

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://github.com/Cinnamon/kotaemon/issues/844
https://www.vulncheck.com/advisories/kotaemon-unauthenticated-remote-code-execution-via-insecure-deserialization

Configurations

No configuration.

History

23 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) kotaemon hasta la versión 0.12.0 contiene una vulnerabilidad de deserialización insegura en el endpoint check_connection que permite a atacantes no autenticados instanciar clases Python arbitrarias al proporcionar una entrada YAML/JSON manipulada con un campo __type__. Los atacantes pueden explotar esto para sobrescribir el campo __type__ con subprocess.check_output y argumentos arbitrarios, logrando la ejecución remota de código con privilegios de proceso de aplicación.

Information

Published : 2026-08-04 16:16

Updated : 2026-10-23 23:10

NVD link : CVE-2026-69098

Mitre link : CVE-2026-69098

CVE.ORG link : CVE-2026-69098

JSON object : View

Products Affected

No product.

CWE

CWE-502

Deserialization of Untrusted Data

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