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CVE-2026-49857 auth-fetch-mcp has SSRF Protection Bypass via IPv4-mapped IPv6 Loopback

🗓️ 13 Aug 2026 14:50:25Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 6 Views

auth-fetch-mcp 3.0.0 allows SSRF bypass via IPv4-mapped IPv6 loopback in assertSafeUrl.

Related
Affected
Refs
[
  {
    "vendor": "ymw0407",
    "product": "auth-fetch-mcp",
    "versions": [
      {
        "version": "< 3.0.2",
        "status": "affected"
      }
    ]
  }
]

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13 Aug 2026 14:50Current
CVSS 3.17.4
6