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CVE-2026-84301— FastGPT safe axios SSRF guard still allows DNS rebinding TOCTOU on protected outbound requests

一分钟漏洞结论

影响对象
labring FastGPT
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

FastGPT is an open-source LLM platform for building AI applications on a knowledge base. Prior to 4.15.2, the safe Axios request interceptor in packages/service/common/api/axios.ts validates a hostname with isInternalAddress() before a later HTTP connection pe

CVSS 6.3 · Medium
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一、 漏洞 CVE-2026-84301 基础信息

漏洞信息

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Vulnerability Title
FastGPT safe axios SSRF guard still allows DNS rebinding TOCTOU on protected outbound requests
来源: CVE Program / CVE List V5
Vulnerability Description
FastGPT is an open-source LLM platform for building AI applications on a knowledge base. Prior to 4.15.2, the safe Axios request interceptor in packages/service/common/api/axios.ts validates a hostname with isInternalAddress() before a later HTTP connection performs an independent DNS lookup, creating a DNS rebinding window, allowing an attacker-controlled hostname to resolve publicly during the check and to a loopback, private, link-local, or metadata address during connection. An authenticated attacker who can supply a URL to a safe-Axios-backed HTTP tool, workflow HTTP node, external file fetch, or other server-side integration can use this time-of-check/time-of-use gap to reach services that direct private-address inputs would block. The same independent re-resolution occurs after manual redirect hops because each redirect target is checked before a separate connection lookup. This issue is fixed in version 4.15.2.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
labring FastGPT < 4.15.2 -

二、漏洞 CVE-2026-84301 的公开POC

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三、漏洞 CVE-2026-84301 的情报信息

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CVE-2026-84301 补丁与修复 (1)

CVE-2026-84301 其他参考 (2)

IV. Related Vulnerabilities

Same product: FastGPT
Same vendor: labring
Same weakness: CWE-918

V. Comments for CVE-2026-84301

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