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CVE-2026-46678 Pydantic AI: SSRF cloud-metadata blocklist bypass via IPv4-mapped IPv6 (Incomplete fix of CVE-2026-25580)

🗓️ 29 Jul 2026 20:16:45Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

Pydantic AI SSRF bypass via IPv4-mapped IPv6 in force_download=allow-local; fix in 1.99.0.

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Affected
Refs
[
  {
    "vendor": "pydantic",
    "product": "pydantic-ai",
    "versions": [
      {
        "version": ">= 1.56.0, < 1.99.0",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "pydantic",
    "product": "pydantic-ai-slim",
    "versions": [
      {
        "version": ">= 1.56.0, < 1.99.0",
        "status": "affected"
      }
    ]
  }
]

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