{"id":"CVE-2026-69098","published":"2026-08-04T16:16:28.190","lastModified":"2026-08-05T16:17:01.003","description":"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.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-502"],"vendors":[],"products":[],"references":[{"url":"https://github.com/Cinnamon/kotaemon/issues/844","tags":[]},{"url":"https://www.vulncheck.com/advisories/kotaemon-unauthenticated-remote-code-execution-via-insecure-deserialization","tags":[]}],"exploitRefs":[{"url":"https://github.com/Cinnamon/kotaemon/issues/844","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows unauthenticated attackers to execute arbitrary code by exploiting an insecure deserialization vulnerability in the check_connection endpoint, leading to remote code execution with application process privileges.","exploitability":"Exploitation is relatively straightforward given the unauthenticated nature and the ability to override the __type__ field with subprocess.check_output, requiring only crafted YAML/JSON input.","blast_radius":"If exploited, the impact could be severe, as it allows for remote code execution with the privileges of the application process, potentially leading to full system compromise.","remediation":"Upgrade to version 0.12.1 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","web","yaml-injection","python"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-28T09:02:46.386Z"}}