{"id":"CVE-2026-69098","summary":"kotaemon 0.12.0 Unauthenticated Remote Code Execution via Insecure Deserialization","details":"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.","modified":"2026-08-07T03:30:10.548394921Z","published":"2026-08-04T15:15:06.018Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-502"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/69xxx/CVE-2026-69098.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/69xxx/CVE-2026-69098.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-69098"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/kotaemon-unauthenticated-remote-code-execution-via-insecure-deserialization"},{"type":"PACKAGE","url":"https://github.com/Cinnamon/kotaemon"},{"type":"EVIDENCE","url":"https://github.com/Cinnamon/kotaemon/issues/844"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cinnamon/kotaemon","events":[{"introduced":"0"},{"fixed":"9ad3e4e49aa35b8acddd235918a5d9753c1cfdf9"}],"database_specific":{"source":["AFFECTED_FIELD","DESCRIPTION"],"extracted_events":[{"introduced":"0"},{"last_affected":"0.12.0"},{"fixed":"0.12.0"}]}}],"versions":["v0.11.3","v0.11.2","v0.11.1","v0.11.0","v0.10.7","v0.10.6","v0.10.5","v0.10.4","v0.10.3","v0.10.2","v0.10.1","v0.10.0","v0.9.11","v0.9.10","v0.9.9","v0.9.8","v0.9.7","v0.9.6","v0.9.5","v0.9.4","v0.9.3","v0.9.2","v0.9.1","v0.9.0","v0.8.3","v0.8.2","v0.8.1","v0.8.0","v0.7.9","v0.7.8","v0.7.7","v0.7.6","v0.7.5","v0.7.4","v0.7.3","v0.7.2","v0.7.1","v0.7.0","v0.6.12","v0.6.11","v0.6.10","v0.6.9","v0.6.8","v0.6.7","v0.6.6","v0.6.5","v0.6.4","v0.6.3","v0.6.2","v0.6.1","v0.6.0","v0.5.3","v0.5.2","v0.5.1","v0.5.0","v0.4.15","v0.4.14","v0.4.13","v0.4.12","v0.4.11","v0.4.10","v0.4.9","v0.4.8","v0.4.7","v0.4.6","v0.4.5","v0.4.4","v0.4.3","v0.4.2","v0.4.1","v0.4.0","v0.3.6","v0.3.5","v0.3.4","v0.3.3","v0.3.2","v0.3.1","v0.3.0","v0.2.0","v0.1.0","v0.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-69098.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}