{"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": "2026-05-11T18:03:27.685Z"}, "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"}}, "adp": [{"references": [{"url": "https://github.com/labring/FastGPT/security/advisories/GHSA-cc8x-jrqv-hmwh", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-11T18:03:09.390132Z", "id": "CVE-2026-42344", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-11T18:03:27.685Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-42344", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-11T18:03:09.390132Z"}}}], "references": [{"url": "https://github.com/labring/FastGPT/security/advisories/GHSA-cc8x-jrqv-hmwh", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-11T18:02:58.360Z"}}], "cna": {"title": "FastGPT: DNS rebinding TOCTOU bypass in isInternalAddress allows SSRF on all protected endpoints", "source": {"advisory": "GHSA-cc8x-jrqv-hmwh", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "labring", "product": "FastGPT", "versions": [{"status": "affected", "version": "<= 4.14.11"}]}], "references": [{"url": "https://github.com/labring/FastGPT/security/advisories/GHSA-cc8x-jrqv-hmwh", "name": "https://github.com/labring/FastGPT/security/advisories/GHSA-cc8x-jrqv-hmwh", "tags": ["x_refsource_CONFIRM"]}], "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-367", "description": "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-08T22:10:00.875Z"}}}, "cveMetadata": {"cveId": "CVE-2026-42344", "state": "PUBLISHED", "dateUpdated": "2026-05-11T18:03:27.685Z", "dateReserved": "2026-04-26T13:26:14.515Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-05-08T22:10:00.875Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"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": "2026-05-12T16:40:21.437", "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"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/labring/FastGPT/security/advisories/GHSA-cc8x-jrqv-hmwh"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.14.11]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "FastGPT", "source": "cna", "vendor": "labring"}, "product": "fastgpt", "vendor": "labring"}], "created": "2026-05-08T23:45:20.229733+00:00", "updated": "2026-05-09T00:00:25.462579+00:00", "vendors": ["labring", "labring$PRODUCT$fastgpt"]}