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Bug bounty program

CP

Cloudflare Public Bug Bounty

Open on HackerOneAtlas
Platform
HackerOne
Bounties
Pays
Assets in scope
51
Disclosed reports
44
Subdomains
24,298
Vendor on CyberSIXT
Cloudflare (70 CVEs, 0 exploited)

Most upvoted reports44

All reports
Most upvoted reports of Cloudflare Public Bug Bounty
ReportWeaknessDisclosedBountyVotes
HTTP Request Smuggling in Transform Rules using hexadecimal escape sequences in the concat() functionAnalysed#1478633Injection and Smuggling2022-05-16$6,000116
Cloudflare CASB Confused Deputy ProblemAnalysed#1952124No weakness recorded2023-06-07$3,30097
Using special IPv4-mapped IPv6 addresses to bypass local IP banAnalysed#1785260No weakness recorded2023-01-24$7,50078
Bypass of Cloudflare's Cache Keys and WAF via header overflow#3027461Access Control2025-11-18–77
Hijack all emails sent to any domain that uses Cloudflare Email ForwardingAnalysed#1419341Access Control2022-07-28$6,00076
`use-mcp`'s oauth2 process uses a window.open call with untrusted mcp server provided data allowing for code execution under the page using itAnalysed#3211031Cross-site Scripting2025-09-30$55075
Yet Another CASB Integration Takeover of Active IntegrationsAnalysed#2094346No weakness recorded2023-11-13–68
[Variation of #3321406] YetAnother 1-Click Chaining of Self-XSS, Cookie Tossing and AntiCSRF Token Prediction leads to auto approval in AccessTempAuthAnalysed#3423950Cross-site Scripting2026-04-14–63
AI Playground XSS to steal user-chat messages and access to connected MCP ServerAnalysed#3424998Cross-site Scripting2026-02-26–62
Bypass R2 payment screenAnalysed#2170559Authentication2023-11-10$35057

Subdomains24,298

Root:cloudflareaccess.com
Scope
Name suggests
First seen
Text fileClear filters4,882 names
Subdomains of Cloudflare Public Bug Bounty
NameScopeFirst seen
intelexprivate.cloudflareaccess.comNot in the scope2026-11-14
intelliasaccess.cloudflareaccess.comNot in the scope2026-11-14
intelligentvoice.cloudflareaccess.comNot in the scope2026-11-14
interatletika.cloudflareaccess.comNot in the scope2026-11-14
interbix.cloudflareaccess.comNot in the scope2026-11-14
interfracom.cloudflareaccess.comNot in the scope2026-11-14
interlinemak.cloudflareaccess.comNot in the scope2026-11-14
intermagnum.cloudflareaccess.comNot in the scope2026-11-14
internetnz.cloudflareaccess.comNot in the scope2026-11-14
interquell.cloudflareaccess.comNot in the scope2026-11-14
interset.cloudflareaccess.comNot in the scope2026-11-14
intoclicks.cloudflareaccess.comNot in the scope2026-11-14
intuitivdigital.cloudflareaccess.comNot in the scope2026-11-14
investagrams.cloudflareaccess.comNot in the scope2026-11-14
invictalaw.cloudflareaccess.comNot in the scope2026-11-14
invictus.cloudflareaccess.comNot in the scope2026-11-14
invokemalaysia.cloudflareaccess.comNot in the scope2026-11-14
involveteam.cloudflareaccess.comNot in the scope2026-11-14
inweb3.cloudflareaccess.comNot in the scope2026-11-14
ioannisgk.cloudflareaccess.comNot in the scope2026-11-14
ioniacob.cloudflareaccess.comNot in the scope2026-11-14
iorinsight.cloudflareaccess.comNot in the scope2026-11-14
iospatech.cloudflareaccess.comNot in the scope2026-11-14
iostructure.cloudflareaccess.comNot in the scope2026-11-14
iothome.cloudflareaccess.comNot in the scope2026-11-14
ip.cloudflareaccess.comNot in the scope2026-11-14
ipconca.cloudflareaccess.comNot in the scope2026-11-14
iphoting.cloudflareaccess.comNot in the scope2026-11-14
ipspace.cloudflareaccess.comNot in the scope2026-11-14
iptvdaycom.cloudflareaccess.comNot in the scope2026-11-14
iptvsecure.cloudflareaccess.comNot in the scope2026-11-14
ipv6.cloudflareaccess.comNot in the scope2026-11-14
iqxnet1.cloudflareaccess.comNot in the scope2026-11-14
iridium.cloudflareaccess.comNot in the scope2026-11-14
ironpeak.cloudflareaccess.comNot in the scope2026-11-14
irumble.cloudflareaccess.comNot in the scope2026-11-14
iryo.cloudflareaccess.comNot in the scope2026-11-14
isagenix.cloudflareaccess.comNot in the scope2026-11-14
ishosting.cloudflareaccess.comNot in the scope2026-11-14
islam21c.cloudflareaccess.comNot in the scope2026-11-14
island-bookings.cloudflareaccess.comNot in the scope2026-11-14
isobook.cloudflareaccess.comNot in the scope2026-11-14
isoc.cloudflareaccess.comNot in the scope2026-11-14
ispratis.cloudflareaccess.comNot in the scope2026-11-14
israfel.cloudflareaccess.comNot in the scope2026-11-14
isrco.cloudflareaccess.comNot in the scope2026-11-14
issdu.cloudflareaccess.comNot in the scope2026-11-14
issio.cloudflareaccess.comNot in the scope2026-11-14
istahome.cloudflareaccess.comNot in the scope2026-11-14
itday.cloudflareaccess.comNot in the scope2026-11-14
itinfrasource.cloudflareaccess.comNot in the scope2026-11-14
itnoobs.cloudflareaccess.comNot in the scope2026-11-14
itpagency.cloudflareaccess.comNot in the scope2026-11-14
itsascam.cloudflareaccess.comNot in the scope2026-11-14
itsviet.cloudflareaccess.comNot in the scope2026-11-14
itsvnncom.cloudflareaccess.comNot in the scope2026-11-14
itxotic.cloudflareaccess.comNot in the scope2026-11-14
itzy.cloudflareaccess.comNot in the scope2026-11-14
iuhiba.cloudflareaccess.comNot in the scope2026-11-14
iused.cloudflareaccess.comNot in the scope2026-11-14
ivacy.cloudflareaccess.comNot in the scope2026-11-14
ivanlaudev.cloudflareaccess.comNot in the scope2026-11-14
ivanti.cloudflareaccess.comNot in the scope2026-11-14
ivaoby.cloudflareaccess.comNot in the scope2026-11-14
ivf-dev.cloudflareaccess.comdevNot in the scope2026-11-14
ivfuture.cloudflareaccess.comNot in the scope2026-11-14
ivnbrvsnchz.cloudflareaccess.comNot in the scope2026-11-14
ivyfertility.cloudflareaccess.comNot in the scope2026-11-14
ivyorg.cloudflareaccess.comNot in the scope2026-11-14
iwc.cloudflareaccess.comNot in the scope2026-11-14
iwinds.cloudflareaccess.comNot in the scope2026-11-14
iwnstudio.cloudflareaccess.comNot in the scope2026-11-14
izquierdadiario.cloudflareaccess.comNot in the scope2026-11-14
jabraenhance.cloudflareaccess.comNot in the scope2026-11-14
jaffaheed.cloudflareaccess.comNot in the scope2026-11-14
jahames44.cloudflareaccess.comNot in the scope2026-11-14
jakubboucek.cloudflareaccess.comNot in the scope2026-11-14
jam247access.cloudflareaccess.comvpnNot in the scope2026-11-14
jamatu.cloudflareaccess.comNot in the scope2026-11-14
james.cloudflareaccess.comNot in the scope2026-11-14
jamesfromkent.cloudflareaccess.comNot in the scope2026-11-14
jameskilbynet.cloudflareaccess.comNot in the scope2026-11-14
jamesmorrison.cloudflareaccess.comNot in the scope2026-11-14
janbask.cloudflareaccess.comNot in the scope2026-11-14
janhidding94.cloudflareaccess.comNot in the scope2026-11-14
janluca-com.cloudflareaccess.comNot in the scope2026-11-14
januszkorczak.cloudflareaccess.comNot in the scope2026-11-14
jaspis.cloudflareaccess.comNot in the scope2026-11-14
jawak.cloudflareaccess.comNot in the scope2026-11-14
jawscoutcc.cloudflareaccess.comNot in the scope2026-11-14
jaygz.cloudflareaccess.comNot in the scope2026-11-14
jbflix.cloudflareaccess.comNot in the scope2026-11-14
jcarlos.cloudflareaccess.comNot in the scope2026-11-14
jedelz.cloudflareaccess.comNot in the scope2026-11-14
jenkinsliquidplus.cloudflareaccess.comNot in the scope2026-11-14
jeroenmoes.cloudflareaccess.comNot in the scope2026-11-14
jerryfields.cloudflareaccess.comNot in the scope2026-11-14
jessica.cloudflareaccess.comNot in the scope2026-11-14
jetbluevacations.cloudflareaccess.comNot in the scope2026-11-14
jetrails.cloudflareaccess.comNot in the scope2026-11-14

18,935 names are covered by the program's own scope; 2 were first seen this week. Names come from ProjectDiscovery's public Chaos dataset (passive sources: certificate logs, DNS and other public data), matched to the program by its listing and its own domain scope. A name being in a dataset is not permission to test it: only what the program's own scope says is in scope, and its policy decides. CyberSIXT does not resolve, probe or scan these names. Tags come from the name alone. Source: ProjectDiscovery Chaos. Subdomains on the Atlas, or search the subdomains of every program.

A name in a dataset is not permission to test it: the program's own scope and rules decide. Data as of 2026-11-15.

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