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CVE-2026-34742 Model Context Protocol Go SDK: DNS Rebinding Protection Disabled by Default for Servers Running on Localhost

🗓️ 02 Apr 2026 18:32:34Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 34 Views

Go MCP SDKs prior to 1.4.0 had no localhost DNS rebinding protection.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-34742
2 Apr 202618:32
attackerkb
circl
Circl
CVE-2026-34742
2 Apr 202622:22
circl
cnnvd
CNNVD
MCP Go SDK 安全漏洞
2 Apr 202600:00
cnnvd
cve
CVE
CVE-2026-34742
2 Apr 202618:32
cve
fedora
Fedora
[SECURITY] Fedora 44 Update: glab-1.91.0-1.fc44
25 Apr 202601:54
fedora
nessus
Tenable Nessus
Fedora 44 : glab (2026-8b0a672383)
28 Apr 202600:00
nessus
github
Github Security Blog
DNS Rebinding Protection Disabled by Default in Model Context Protocol Go SDK for Servers Running on Localhost
1 Apr 202621:09
github
nvd
NVD
CVE-2026-34742
2 Apr 202619:21
nvd
osv
OSV
CGA-2F3V-V9QW-88GM
2 Apr 202611:40
osv
osv
OSV
CGA-76GX-2RPQ-M7V2
2 Apr 202612:14
osv
Rows per page
[
  {
    "vendor": "modelcontextprotocol",
    "product": "go-sdk",
    "versions": [
      {
        "version": "< 1.4.0",
        "status": "affected"
      }
    ]
  }
]

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02 Apr 2026 18:32Current
CVSS 47.6
EPSS0.00455
34