{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.5.5"
              },
              {
                "last_affected": "0.6.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "2360c5075d0c194c405831aff05f515683a6cae7"
            },
            {
              "last_affected": "a994c061ac7b508ee3226f5c2fe634ad5802c090"
            }
          ],
          "repo": "https://github.com/kanbn/kan",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-qrx8-9hc6-jvqg"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110628.json"
  },
  "details": "Kan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in the /api/download/attatchment route due to an incomplete fix for CVE-2026-32255. When S3_ENDPOINT is unset, attackers can pass arbitrary url query parameters to fetch() to read internal services, localhost ports, and cloud instance metadata.",
  "id": "CVE-2026-110628",
  "modified": "2026-10-15T02:30:45.974832859Z",
  "published": "2026-10-14T14:17:03.232Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110628.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/kanbn/kan"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/kanbn/kan/blob/v0.6.0/.env.example#L25-L27"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/kanbn/kan/blob/v0.6.0/apps/web/src/pages/api/download/attatchment.ts#L21-L52"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kanbn/kan/commit/53397d8e81dc1494d94132848c1f0416f1152bd7"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kanbn/kan/pull/590"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/kanbn/kan/security/advisories/GHSA-qrx8-9hc6-jvqg"
    },
    {
      "type": "ADVISORY",
      "url": "https://hackmd.io/@leediay/HyIxU63ofg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110628"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/kan-0.5.5-through-0.6.0-unauthenticated-ssrf-via-api-download-attatchment"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchment"
}