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The vulnerability of the json.Unmarshal() function in the JSON-RPC protocol implementation of the MCP Go SDK allows attackers to bypass existing security mechanisms.
🗓️ 02 Mar 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 1 Views
| Reporter | Title | Published | Views | Family All 135 |
|---|---|---|---|---|
 | CVE-2026-27896 | 26 Feb 202600:47 | – | attackerkb |
 | CVE-2026-27896 vulnerabilities | 27 Feb 202619:17 | – | cgr |
 | CVE-2026-27896 | 26 Feb 202602:20 | – | circl |
 | MCP Go SDK 安全漏洞 | 26 Feb 202600:00 | – | cnnvd |
 | CVE-2026-27896 | 26 Feb 202600:47 | – | cve |
 | CVE-2026-27896 MCP Go SDK Vulnerable to Improper Handling of Case Sensitivity | 26 Feb 202600:47 | – | cvelist |
 | EUVD-2026-8792 | 26 Feb 202622:20 | – | euvd |
 | MCP Go SDK Vulnerable to Improper Handling of Case Sensitivity | 26 Feb 202622:20 | – | github |
 | CVE-2026-27896 | 26 Feb 202601:16 | – | nvd |
 | CGA-VFRX-695V-7WQ5 | 28 Feb 202605:29 | – | osv |
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06 May 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 29.4
CVSS 310
EPSS0.00255