CVE-2026-71495

{
  "id": "CVE-2026-71495",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-06T19:17:56.657",
  "lastModified": "2026-11-06T19:17:56.657",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Wanderer is a self-hosted trail database for saving and sharing adventures. Prior to 0.20.0, when PUBLIC_PRIVATE_INSTANCE is not set to true, the unauthenticated POST /api/v1/trail/download handler passes the attacker-controlled JSON url field directly to event.fetch() and returns the fetched response. This allows requests to internal services such as db:8090 and search:7700, cloud metadata addresses, and other network destinations, exposing returned data and permitting internal network reconnaissance or denial of service. This issue is fixed in version 0.20.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "open-wanderer",
          "product": "wanderer",
          "versions": [
            {
              "version": "< 0.20.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H",
          "baseScore": 10.0,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.8
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/open-wanderer/wanderer/commit/c371337b3db1d2895b5cad651046ef0ad4dfc802",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/open-wanderer/wanderer/pull/1104",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/open-wanderer/wanderer/releases/tag/v0.20.0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/open-wanderer/wanderer/security/advisories/GHSA-7vqq-mjjr-h9j5",
      "source": "[email protected]"
    }
  ]
}