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.

Affected products

Kotaemon

CVSS 3.1

9.8 CRITICAL

EPSS

0.5% (41th percentile)

Weakness

CWE-502

NVD status

Received

Published

2026-08-04