{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "0.12.0"
              },
              {
                "fixed": "0.12.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9ad3e4e49aa35b8acddd235918a5d9753c1cfdf9"
            }
          ],
          "repo": "https://github.com/cinnamon/kotaemon",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82281.json"
  },
  "details": "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 conversations, or rename conversations by supplying arbitrary conversation identifiers without proper authorization checks.",
  "id": "CVE-2026-82281",
  "modified": "2026-08-30T03:30:37.167846844Z",
  "published": "2026-08-28T16:19:01.076Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82281.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82281"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/kotaemon-missing-ownership-check-in-conversation-functions"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Cinnamon/kotaemon/issues/846"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Cinnamon/kotaemon"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/Cinnamon/kotaemon/blob/9ad3e4e49aa35b8acddd235918a5d9753c1cfdf9/libs/ktem/ktem/pages/chat/control.py"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Kotaemon Missing Ownership Check in Conversation Functions"
}