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CVE-2026-27896 MCP Go SDK Vulnerable to Improper Handling of Case Sensitivity

🗓️ 26 Feb 2026 00:47:46Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 52 Views

CVE-2026-27896: MCP Go SDK accepted mixed-case JSON fields before 1.3.1; update to v1.3.1.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-27896
26 Feb 202600:47
–attackerkb
bdu_fstec
BDU FSTEC
MCP Go SDK JSON Unmarshal Bypass
2 Mar 202600:00
–bdu_fstec
cgr
Chainguard
CVE-2026-27896 vulnerabilities
27 Feb 202619:17
–cgr
circl
Circl
CVE-2026-27896
26 Feb 202602:20
–circl
cnnvd
CNNVD
MCP Go SDK security vulnerabilities
26 Feb 202600:00
–cnnvd
cve
CVE
CVE-2026-27896
26 Feb 202600:47
–cve
euvd
EUVD
EUVD-2026-8792
26 Feb 202622:20
–euvd
github
Github Security Blog
MCP Go SDK Vulnerable to Improper Handling of Case Sensitivity
26 Feb 202622:20
–github
mend
Mend
CVE-2026-27896
26 Feb 202600:47
–mend
nvd
NVD
CVE-2026-27896
26 Feb 202601:16
–nvd
Rows per page
[
  {
    "vendor": "modelcontextprotocol",
    "product": "go-sdk",
    "versions": [
      {
        "version": "< 1.3.1",
        "status": "affected"
      }
    ]
  }
]

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26 Feb 2026 00:47Current
CVSS 47
CVSS 3.17.2
EPSS0.00467
SSVC
52