CVE Explorer

CVE-2026-42344

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 — 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

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:be422d6a84fbf57c04f72cb6a5f432c216add657eda9a7453368aea991175189

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"FastGPT","vendor":"labring","versions":[{"status":"affected","version":"<= 4.14.11"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:3c5886649fddc5cb97eb409016cf72e4751877a5750f2602d1cc226bbba94367 · sha256:9242d16e384a62b5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"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"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:3c5886649fddc5cb97eb409016cf72e4751877a5750f2602d1cc226bbba94367 · sha256:9242d16e384a62b5… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:3c5886649fddc5cb97eb409016cf72e4751877a5750f2602d1cc226bbba94367 · sha256:9242d16e384a62b5… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"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"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3c5886649fddc5cb97eb409016cf72e4751877a5750f2602d1cc226bbba94367 · sha256:9242d16e384a62b5… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/labring/FastGPT/security/advisories/GHSA-cc8x-jrqv-hmwh"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3c5886649fddc5cb97eb409016cf72e4751877a5750f2602d1cc226bbba94367 · sha256:9242d16e384a62b5… · /containers/adp/0/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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