{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42344", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-26T13:26:14.515Z", "datePublished": "2026-05-08T22:10:00.875Z", "dateUpdated": "2026-05-08T22:10:00.875Z"}, "containers": {"cna": {"title": "FastGPT: DNS rebinding TOCTOU bypass in isInternalAddress allows SSRF on all protected endpoints", "problemTypes": [{"descriptions": [{"cweId": "CWE-367", "lang": "en", "description": "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition", "type": "CWE"}]}], "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"}}], "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"}], "affected": [{"vendor": "labring", "product": "FastGPT", "versions": [{"version": "<= 4.14.11", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-08T22:10:00.875Z"}, "descriptions": [{"lang": "en", "value": "FastGPT is an AI Agent building platform. In versions 4.14.11 and prior, FastGPT's 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."}], "source": {"advisory": "GHSA-cc8x-jrqv-hmwh", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "FastGPT is an AI Agent building platform. In versions 4.14.11 and prior, FastGPT's 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."}], "id": "CVE-2026-42344", "lastModified": "2026-05-08T23:16:37.177", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 1.8, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-08T23:16:37.177", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/labring/FastGPT/security/advisories/GHSA-cc8x-jrqv-hmwh"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}