nuclei-templates/vulnerabilities/generic/cors-misconfig.yaml

id: cors-misconfig

info:
  name: Basic CORS misconfiguration
  author: nadino,G4L1T0,convisoappsec,pdteam
  severity: info
  reference: https://portswigger.net/web-security/cors
  tags: cors,generic

requests:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

      - |
        GET / HTTP/1.1
        Host: {{Hostname}}
        Origin: {{randstr}}.tld

      - |
        GET / HTTP/1.1
        Host: {{Hostname}}
        Origin: null

#  TODO's for future as currently {{Hostname}} is not supported in matchers
#        Origin: {{randstr}}.{{Hostname}}
#        Origin: {{Hostname}}.{{randstr}}.tld
#        Origin: {{Hostname}}{{randstr}}.tld
#        Origin: {{Hostname}}_.{{randstr}}.tld
#        Origin: {{Hostname}}%60.{{randstr}}.tld
#        Origin: http://{{Hostname}}
#        Origin: http://{{randstr}}.{{Hostname}}

    matchers-condition: or
    matchers:
      - type: dsl
        name: arbitrary-origin
        dsl:
          - "contains(tolower(all_headers), 'access-control-allow-origin: {{randstr}}.tld')"
          - "contains(tolower(all_headers), 'access-control-allow-credentials: true')"
        condition: and

      - type: dsl
        name: null-origin
        dsl:
          - "contains(tolower(all_headers), 'access-control-allow-origin: null')"
          - "contains(tolower(all_headers), 'access-control-allow-credentials: true')"
        condition: and

      - type: dsl
        name: wildcard-acac
        dsl:
          - "contains(tolower(all_headers), 'access-control-allow-origin: *')"
          - "contains(tolower(all_headers), 'access-control-allow-credentials: true')"
        condition: and

      - type: dsl
        name: wildcard-no-acac
        dsl:
          - "contains(tolower(all_headers), 'access-control-allow-origin: *')"
          - "!contains(tolower(all_headers), 'access-control-allow-credentials: true')"
        condition: and