{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "FastGPT",
          "vendor": "labring",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 4.14.11"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "FastGPT is an AI Agent building platform. In versions 4.14.11 and prior, FastGPT\u0027s isInternalAddress() function in packages/service/common/system/utils.ts is vulnerable to DNS rebinding (TOCTOU \u2014 Time-of-Check to Time-of-Use). The function resolves the hostname via dns.resolve4()/dns.resolve6() and checks resolved IPs against private ranges, but the actual HTTP request happens in a separate call with a new DNS resolution, allowing the DNS record to change between validation and fetch. At time of publication, there are no publicly available patches."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-367",
              "description": "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-08T22:10:00.875Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/labring/FastGPT/security/advisories/GHSA-cc8x-jrqv-hmwh",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/labring/FastGPT/security/advisories/GHSA-cc8x-jrqv-hmwh"
        }
      ],
      "source": {
        "advisory": "GHSA-cc8x-jrqv-hmwh",
        "discovery": "UNKNOWN"
      },
      "title": "FastGPT: DNS rebinding TOCTOU bypass in isInternalAddress allows SSRF on all protected endpoints"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-42344",
    "datePublished": "2026-05-08T22:10:00.875Z",
    "dateReserved": "2026-04-26T13:26:14.515Z",
    "dateUpdated": "2026-05-08T22:10:00.875Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-42344\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-05-08T23:16:37.177\",\"lastModified\":\"2026-05-08T23:16:37.177\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"FastGPT is an AI Agent building platform. In versions 4.14.11 and prior, FastGPT\u0027s isInternalAddress() function in packages/service/common/system/utils.ts is vulnerable to DNS rebinding (TOCTOU \u2014 Time-of-Check to Time-of-Use). The function resolves the hostname via dns.resolve4()/dns.resolve6() and checks resolved IPs against private ranges, but the actual HTTP request happens in a separate call with a new DNS resolution, allowing the DNS record to change between validation and fetch. At time of publication, there are no publicly available patches.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N\",\"baseScore\":6.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":4.0}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-367\"}]}],\"references\":[{\"url\":\"https://github.com/labring/FastGPT/security/advisories/GHSA-cc8x-jrqv-hmwh\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}