CVE-2026-27896 vulnerabilities

Vulnerabilities for packages: osv-scanner, ferretdb, opencost, github-mcp-server, jaeger, gptscript, datadog-agent...

CVE-2026-27896 vulnerabilities

Vulnerabilities for packages: flux-operator, flux-operator-fips, osv-scanner, jaeger, datadog-agent-fips, github-mcp-server, gptscript, opencost-fips, opencost, gitlab-workhorse-ce-fips, jaeger-fips, datadog-agent, gitlab-workhorse-ce, ferretdb...

CVE-2026-27896

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...