{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.20.2"
              },
              {
                "last_affected": "1.24.5"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "6f2da40b9bf4b795929f8ec3a6cfb1c31ccbc805"
            },
            {
              "last_affected": "04496b59f7fb1f0aa868ceecc9beeedc0bdc8a2b"
            }
          ],
          "repo": "https://github.com/coroot/coroot",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-601"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79786.json"
  },
  "details": "Coroot's unauthenticated MCP OAuth dynamic client registration endpoint accepts any syntactically valid redirect URI without validation, allowing attackers to register clients pointing to attacker-controlled hosts. Attackers can send authorization URLs to signed-in users, capture their authorization codes upon consent approval, and exchange them for access tokens to hijack MCP sessions.",
  "id": "CVE-2026-79786",
  "modified": "2026-08-27T11:31:07.424047487Z",
  "published": "2026-08-25T18:23:14.494Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79786.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-79786"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/coroot-1.20.2-through-1.24.5-unvalidated-redirect-uri-in-mcp-oauth-client-registration"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/coroot/coroot/issues/929"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/coroot/coroot"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/coroot/coroot/blob/v1.24.5/api/mcp_oauth.go"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Coroot 1.20.2 through 1.24.5 Unvalidated Redirect URI in MCP OAuth Client Registration"
}