CVE-2026-42344 (GCVE-0-2026-42344)
Vulnerability from cvelistv5
Published
2026-05-08 22:10
Modified
2026-05-11 18:03
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Summary
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 publication, there are no publicly available patches.
Impacted products
Vendor Product Version
labring FastGPT Version: <= 4.14.11
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Show details on NVD website


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