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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
ic.cloudflareaccess.comNot in the scope2026-11-14
ic-internal.cloudflareaccess.cominternalNot in the scope2026-11-14
iccdashboard.cloudflareaccess.comNot in the scope2026-11-14
icecreamcfsso.cloudflareaccess.comNot in the scope2026-11-14
icelandairlabs.cloudflareaccess.comNot in the scope2026-11-14
iceline-hosting.cloudflareaccess.comNot in the scope2026-11-14
icemcnet.cloudflareaccess.comNot in the scope2026-11-14
icetravelgroup.cloudflareaccess.comNot in the scope2026-11-14
ichanneltech.cloudflareaccess.comNot in the scope2026-11-14
ichschonwieder.cloudflareaccess.comNot in the scope2026-11-14
icliniq.cloudflareaccess.comNot in the scope2026-11-14
icus.cloudflareaccess.comNot in the scope2026-11-14
icyteam.cloudflareaccess.comNot in the scope2026-11-14
id.cloudflareaccess.comNot in the scope2026-11-14
idccy.cloudflareaccess.comNot in the scope2026-11-14
idealab.cloudflareaccess.comNot in the scope2026-11-14
idealimage.cloudflareaccess.comNot in the scope2026-11-14
identity.cloudflareaccess.comauthNot in the scope2026-11-14
idevdesign.cloudflareaccess.comNot in the scope2026-11-14
idex-dev.cloudflareaccess.comdevNot in the scope2026-11-14
idxinfra.cloudflareaccess.comNot in the scope2026-11-14
ifan.cloudflareaccess.comNot in the scope2026-11-14
ifference.cloudflareaccess.comNot in the scope2026-11-14
ifgive.cloudflareaccess.comNot in the scope2026-11-14
ifinex.cloudflareaccess.comNot in the scope2026-11-14
ifocs.cloudflareaccess.comNot in the scope2026-11-14
igc.cloudflareaccess.comNot in the scope2026-11-14
igdinfo.cloudflareaccess.comNot in the scope2026-11-14
ignatavidal.cloudflareaccess.comNot in the scope2026-11-14
ignition.cloudflareaccess.comNot in the scope2026-11-14
igoher.cloudflareaccess.comNot in the scope2026-11-14
igryder.cloudflareaccess.comNot in the scope2026-11-14
igtit.cloudflareaccess.comNot in the scope2026-11-14
iherb.cloudflareaccess.comNot in the scope2026-11-14
ikuma-t.cloudflareaccess.comNot in the scope2026-11-14
iland.cloudflareaccess.comNot in the scope2026-11-14
ilckc.cloudflareaccess.comNot in the scope2026-11-14
iledatos.cloudflareaccess.comNot in the scope2026-11-14
images.cloudflareaccess.comNot in the scope2026-11-14
imaginationstore.cloudflareaccess.comNot in the scope2026-11-14
imaginecurve.cloudflareaccess.comNot in the scope2026-11-14
imagjino.cloudflareaccess.comNot in the scope2026-11-14
imania.cloudflareaccess.comNot in the scope2026-11-14
imap.cloudflareaccess.commailNot in the scope2026-11-14
imazpress.cloudflareaccess.comNot in the scope2026-11-14
imba.cloudflareaccess.comNot in the scope2026-11-14
imedia.cloudflareaccess.comNot in the scope2026-11-14
img.cloudflareaccess.comNot in the scope2026-11-14
imgworlds.cloudflareaccess.comNot in the scope2026-11-14
imissher.cloudflareaccess.comNot in the scope2026-11-14
imiyamura.cloudflareaccess.comNot in the scope2026-11-14
immersive-translate.cloudflareaccess.comNot in the scope2026-11-14
immoweb.cloudflareaccess.comNot in the scope2026-11-14
immunotec.cloudflareaccess.comNot in the scope2026-11-14
immunotecdev.cloudflareaccess.comNot in the scope2026-11-14
impakfinance.cloudflareaccess.comNot in the scope2026-11-14
imtilakstage.cloudflareaccess.comNot in the scope2026-11-14
imunis.cloudflareaccess.comNot in the scope2026-11-14
in2.cloudflareaccess.comNot in the scope2026-11-14
inanyevent.cloudflareaccess.comNot in the scope2026-11-14
inbound.cloudflareaccess.comNot in the scope2026-11-14
incentiv-testnet.cloudflareaccess.comNot in the scope2026-11-14
incetro.cloudflareaccess.comNot in the scope2026-11-14
indeed.cloudflareaccess.comNot in the scope2026-11-14
indexofai.cloudflareaccess.comNot in the scope2026-11-14
india.cloudflareaccess.comNot in the scope2026-11-14
indodax.cloudflareaccess.comNot in the scope2026-11-14
inductor.cloudflareaccess.comNot in the scope2026-11-14
industriemeister.cloudflareaccess.comNot in the scope2026-11-14
industrydive.cloudflareaccess.comNot in the scope2026-11-14
infernalsunshine.cloudflareaccess.comNot in the scope2026-11-14
infernodev.cloudflareaccess.comNot in the scope2026-11-14
infistar.cloudflareaccess.comNot in the scope2026-11-14
info.cloudflareaccess.comNot in the scope2026-11-14
infoplaza.cloudflareaccess.comNot in the scope2026-11-14
inforix.cloudflareaccess.comNot in the scope2026-11-14
infosum.cloudflareaccess.comNot in the scope2026-11-14
infowarscom.cloudflareaccess.comNot in the scope2026-11-14
ingredientsonline.cloudflareaccess.comNot in the scope2026-11-14
ington.cloudflareaccess.comNot in the scope2026-11-14
ingtranet.cloudflareaccess.comNot in the scope2026-11-14
inheriti.cloudflareaccess.comNot in the scope2026-11-14
iniot.cloudflareaccess.comNot in the scope2026-11-14
inloggen.cloudflareaccess.comNot in the scope2026-11-14
inmanta.cloudflareaccess.comNot in the scope2026-11-14
innovattions.cloudflareaccess.comNot in the scope2026-11-14
inovae.cloudflareaccess.comNot in the scope2026-11-14
inp.cloudflareaccess.comNot in the scope2026-11-14
inscribeai.cloudflareaccess.comNot in the scope2026-11-14
insead.cloudflareaccess.comNot in the scope2026-11-14
insidecom.cloudflareaccess.comNot in the scope2026-11-14
insidethekasm.cloudflareaccess.comNot in the scope2026-11-14
insightway.cloudflareaccess.comNot in the scope2026-11-14
insom.cloudflareaccess.comNot in the scope2026-11-14
inspiretec.cloudflareaccess.comNot in the scope2026-11-14
instatext.cloudflareaccess.comNot in the scope2026-11-14
insurity.cloudflareaccess.comNot in the scope2026-11-14
insvr.cloudflareaccess.comNot in the scope2026-11-14
int8.cloudflareaccess.comNot in the scope2026-11-14
integration23andme.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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