{"id":"CVE-2026-69098","title":"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_…","summary":"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_…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-502"],"published":"2026-08-04","updated":"2026-09-23","sourceUpdated":"2026-09-23T17:17:42.230","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-69098","references":[{"url":"https://github.com/Cinnamon/kotaemon/issues/844","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/kotaemon-unauthenticated-remote-code-execution-via-insecure-deserialization","label":"disclosure@vulncheck.com"}],"tags":["nvd","exploit-available"],"epss":0.00692,"epssPercentile":0.51489,"exploits":{"github":1,"githubRepos":["https://github.com/0xdak/CVE-2026-69098_exploit"],"checkedAt":"2026-09-23T17:28:48.953Z"},"exploitAvailable":true,"ingestedAt":"2026-09-23T17:28:14.796Z","slug":"CVE-2026-69098","body":"## Overview\n\nkotaemon 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":66,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}