CVE-2026-27896
中文标题:
（暂无数据）
英文标题:
MCP Go SDK Vulnerable to Improper Handling of Case Sensitivity
漏洞描述
中文描述:
（暂无数据）
英文描述:
The Go MCP SDK used Go's standard encoding/json.Unmarshal for JSON-RPC and MCP protocol message parsing in versions prior to 1.3.1. Go's standard library performs case-insensitive matching of JSON keys to struct field tags — a field tagged json:"method" would also match "Method", "METHOD", etc. This violated the JSON-RPC 2.0 specification, which defines exact field names. A malicious MCP peer may have been able to send protocol messages with non-standard field casing that the SDK would silently accept. This had the potential for bypassing intermediary inspection and coss-implementation inconsistency. Go's standard JSON unmarshaling was replaced with a case-sensitive decoder in commit 7b8d81c. Users are advised to update to v1.3.1 to resolve this issue.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| modelcontextprotocol | go-sdk | < 1.3.1 | - | - |
cpe:2.3:a:modelcontextprotocol:go-sdk:<_1.3.1:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
CVSS评分详情
4.0 (cna)
HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2026-27896 |
2026-02-26 03:19:54 | 2026-02-25 22:00:01 |
| NVD | nvd_CVE-2026-27896 |
2026-02-27 02:00:05 | 2026-02-26 22:00:03 |
版本与语言
安全公告
变更历史
查看详细变更
- data_sources: ['cve'] -> ['cve', 'nvd']