| 标题 | a2ui-project a2ui V1.0 CWE-918 |
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| 描述 | The FileResolver is designed with security configuration options (allowed_hosts, allowed_mime_types, magic-byte verification, size and concurrency limits). However, allowed_hosts=None is the default, and in that mode the resolver performs an httpx GET on any http(s) URL supplied via the client-controlled fileId (or an LLM-initiated tool call), following redirects. The redirect-host check only runs when an allowlist is configured, and the connection is already made before any check — leaving a blind-request window and a DNS-rebinding TOCTOU (validation and connection resolve the hostname independently). |
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| 来源 | ⚠️ https://github.com/a2ui-project/a2ui/issues/2295 |
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| 用户 | colorfullbz (UID 86308) |
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| 提交 | 2026-08-17 15時29分 (1 月前) |
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| 管理 | 2026-09-15 20時29分 (29 days later) |
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| 状态 | 已接受 |
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| VulDB条目 | 404460 [a2ui-project a2ui 直到 0.10.7 FileResolver file_resolver.py httpx.get 权限提升] |
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| 积分 | 20 |
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