{"id":"CVE-2026-82281","title":"Kotaemon through 0.12.0 fails to properly validate conversation ownership in select_conv, delete_conv, rename_conv, and on_set_public_conversation functions in control.py","summary":"Kotaemon through 0.12.0 fails to properly validate conversation ownership in select_conv, delete_conv, rename_conv, and on_set_public_conversation functions in control.py. Attackers can read other users' chat histories, delete conversati…","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-639"],"published":"2026-08-28","updated":"2026-09-23","sourceUpdated":"2026-09-23T17:17:43.740","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82281","references":[{"url":"https://github.com/Cinnamon/kotaemon","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Cinnamon/kotaemon/blob/9ad3e4e49aa35b8acddd235918a5d9753c1cfdf9/libs/ktem/ktem/pages/chat/control.py","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Cinnamon/kotaemon/issues/846","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/kotaemon-missing-ownership-check-in-conversation-functions","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Cinnamon/kotaemon/issues/846","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00331,"epssPercentile":0.23524,"ingestedAt":"2026-09-23T17:28:14.815Z","slug":"CVE-2026-82281","body":"## Overview\n\nKotaemon through 0.12.0 fails to properly validate conversation ownership in select_conv, delete_conv, rename_conv, and on_set_public_conversation functions in control.py. Attackers can read other users' chat histories, delete conversations, or rename conversations by supplying arbitrary conversation identifiers without proper authorization checks.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}