Mailchimp Vulnerability Disclosure

generated: '2026-08-13'
method: searched
probe: true
source: https://mailchimp.com/.well-known/security.txt
checked: '2026-08-13'
policy:
  - https://mailchimp.com/about/security/#Responsible_Disclosure
contact:
  - https://mailchimp.com/about/security/#Responsible_Disclosure
bug_bounty:
  present: false
  detail: >-
    Mailchimp runs a responsible-disclosure program but explicitly states it is
    not a bug bounty: "This program isn't intended to represent a public bug
    bounty program and we make no offers of reward or compensation for submitting
    potential issues." Reports cover "any product, system, or asset belonging to
    Intuit."
disclosure_guidelines:
  - Share the security issue with Mailchimp before making it public.
  - Wait for notification that the vulnerability is resolved before disclosing to third parties.
  - Provide clear, concise reproduction steps and complete details, including a proof-of-concept URL.
security_txt:
  served: true
  url: https://mailchimp.com/.well-known/security.txt
  http_status: 200
  fields_present: [Contact]
  fields_missing: [Expires, Policy, Encryption, Preferred-Languages, Canonical]
  note: >-
    RFC 9116 requires an Expires field; Mailchimp's security.txt carries a single
    Contact line and nothing else, so it is served but not conformant.
  file: well-known/mailchimp-security.txt
evidence:
  - source: https://mailchimp.com/.well-known/security.txt
    kind: security.txt (live probe)
    http_status: 200
  - source: https://mailchimp.com/about/security/
    kind: responsible disclosure program page
    http_status: 200