{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "last_affected": "4.0.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "e7df3f687b0a466eb396cd4f04686a3246b898c2"
            }
          ],
          "repo": "https://github.com/coaidev/coai",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111618.json"
  },
  "details": "CoAI (Chat Nio) through 4.0.0 contains an unauthenticated path traversal vulnerability in the generation and article archive download endpoints via the hash query parameter. Attackers can supply ../ sequences in hash to download any readable .tar.gz or .zip file, including other users' generated archives.",
  "id": "CVE-2026-111618",
  "modified": "2026-10-21T02:30:24.082022331Z",
  "published": "2026-10-16T17:38:55.985Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111618.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/coaidev/coai"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/coaidev/coai/blob/v4.0.0/addition/article/api.go#L25-L35"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/coaidev/coai/blob/v4.0.0/addition/generation/api.go#L19-L29"
    },
    {
      "type": "ADVISORY",
      "url": "https://hackmd.io/@hieuPenguinnn/coai-chatnio-generation-article-download-path-traversal"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111618"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/coai-through-4.0.0-unauthenticated-path-traversal-via-archive-download-endpoints"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "CoAI through 4.0.0 Unauthenticated Path Traversal via Archive Download Endpoints"
}