mcp-server-semgrep/semgrep-rules/go/gorilla/security/audit/session-cookie-samesitenone.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: session-cookie-samesitenone
  patterns:
  - pattern-inside: |
      &sessions.Options{
        ...,
        SameSite: http.SameSiteNoneMode,
        ...,
      }
  - pattern: |
      &sessions.Options{
        ...,
      }
  message: Found SameSiteNoneMode setting in Gorilla session options. Consider setting
    SameSite to Lax, Strict or Default for enhanced security.
  metadata:
    cwe:
    - 'CWE-1275: Sensitive Cookie with Improper SameSite Attribute'
    owasp:
    - A05:2021 - Security Misconfiguration
    references:
    - https://pkg.go.dev/github.com/gorilla/sessions#Options
    category: security
    technology:
    - gorilla
    confidence: MEDIUM
    subcategory:
    - audit
    likelihood: LOW
    impact: LOW
  fix-regex:
    regex: (SameSite\s*:\s+)http.SameSiteNoneMode
    replacement: \1http.SameSiteDefaultMode
  severity: WARNING
  languages:
  - go