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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
mythical.cloudflareaccess.comNot in the scope2026-11-14
mytriorings.cloudflareaccess.comNot in the scope2026-11-14
mytripology.cloudflareaccess.comNot in the scope2026-11-14
myvillabreaks.cloudflareaccess.comNot in the scope2026-11-14
n.cloudflareaccess.comNot in the scope2026-11-14
n11s.cloudflareaccess.comNot in the scope2026-11-14
n2oh.cloudflareaccess.comNot in the scope2026-11-14
n3tn0de.cloudflareaccess.comNot in the scope2026-11-14
nabi.cloudflareaccess.comNot in the scope2026-11-14
nadrama.cloudflareaccess.comNot in the scope2026-11-14
namaxa.cloudflareaccess.comNot in the scope2026-11-14
namepros.cloudflareaccess.comNot in the scope2026-11-14
nameprosdev.cloudflareaccess.comNot in the scope2026-11-14
namvu.cloudflareaccess.comNot in the scope2026-11-14
naphos.cloudflareaccess.comNot in the scope2026-11-14
napochaan.cloudflareaccess.comNot in the scope2026-11-14
nas82.cloudflareaccess.comNot in the scope2026-11-14
nate.cloudflareaccess.comNot in the scope2026-11-14
nathan.cloudflareaccess.comNot in the scope2026-11-14
natterstefan.cloudflareaccess.comNot in the scope2026-11-14
natterville.cloudflareaccess.comNot in the scope2026-11-14
natuurpunt.cloudflareaccess.comNot in the scope2026-11-14
navent.cloudflareaccess.comNot in the scope2026-11-14
naviservices.cloudflareaccess.comNot in the scope2026-11-14
nayrnet.cloudflareaccess.comNot in the scope2026-11-14
nbch.cloudflareaccess.comNot in the scope2026-11-14
nblab2023.cloudflareaccess.comNot in the scope2026-11-14
nchaltry.cloudflareaccess.comNot in the scope2026-11-14
nckp.cloudflareaccess.comNot in the scope2026-11-14
ncrcfsso.cloudflareaccess.comNot in the scope2026-11-14
nday-team-pages.cloudflareaccess.comNot in the scope2026-11-14
nebula-ims.cloudflareaccess.comNot in the scope2026-11-14
nei.cloudflareaccess.comNot in the scope2026-11-14
nelly.cloudflareaccess.comNot in the scope2026-11-14
neoautus.cloudflareaccess.comNot in the scope2026-11-14
neodon.cloudflareaccess.comNot in the scope2026-11-14
nepgroup.cloudflareaccess.comNot in the scope2026-11-14
nerdwallet.cloudflareaccess.comNot in the scope2026-11-14
nerdykrishna.cloudflareaccess.comNot in the scope2026-11-14
net.cloudflareaccess.comNot in the scope2026-11-14
netadmin2025.cloudflareaccess.comNot in the scope2026-11-14
netagenda.cloudflareaccess.comNot in the scope2026-11-14
netconomy.cloudflareaccess.comNot in the scope2026-11-14
netnode-com.cloudflareaccess.comNot in the scope2026-11-14
netresources.cloudflareaccess.comNot in the scope2026-11-14
netspark.cloudflareaccess.comNot in the scope2026-11-14
netwarsystem.cloudflareaccess.comNot in the scope2026-11-14
netweather.cloudflareaccess.comNot in the scope2026-11-14
networding.cloudflareaccess.comNot in the scope2026-11-14
networkmc.cloudflareaccess.comNot in the scope2026-11-14
netzen.cloudflareaccess.comNot in the scope2026-11-14
netzo.cloudflareaccess.comNot in the scope2026-11-14
neumarkets.cloudflareaccess.comNot in the scope2026-11-14
neural.cloudflareaccess.comNot in the scope2026-11-14
neutralisp.cloudflareaccess.comNot in the scope2026-11-14
neutronmotorsports.cloudflareaccess.comNot in the scope2026-11-14
neutronnode.cloudflareaccess.comNot in the scope2026-11-14
neutronsec.cloudflareaccess.comNot in the scope2026-11-14
neversettle.cloudflareaccess.comNot in the scope2026-11-14
neversettle360.cloudflareaccess.comNot in the scope2026-11-14
new.cloudflareaccess.comNot in the scope2026-11-14
newca.cloudflareaccess.comNot in the scope2026-11-14
newdeeptravels.cloudflareaccess.comNot in the scope2026-11-14
newks.cloudflareaccess.comNot in the scope2026-11-14
newmeridiancorp.cloudflareaccess.comNot in the scope2026-11-14
newpro.cloudflareaccess.comNot in the scope2026-11-14
news.cloudflareaccess.comNot in the scope2026-11-14
newsgator.cloudflareaccess.comNot in the scope2026-11-14
newssvmedia.cloudflareaccess.comNot in the scope2026-11-14
newswars.cloudflareaccess.comNot in the scope2026-11-14
newyorkstyleguide.cloudflareaccess.comNot in the scope2026-11-14
newzoo.cloudflareaccess.comNot in the scope2026-11-14
nexcore.cloudflareaccess.comNot in the scope2026-11-14
nextcloudvpn.cloudflareaccess.comNot in the scope2026-11-14
nextoch.cloudflareaccess.comNot in the scope2026-11-14
nextvacay.cloudflareaccess.comNot in the scope2026-11-14
nextventures.cloudflareaccess.comNot in the scope2026-11-14
nexusmods.cloudflareaccess.comNot in the scope2026-11-14
nfdkopsnkbdfpj.cloudflareaccess.comNot in the scope2026-11-14
nfec.cloudflareaccess.comNot in the scope2026-11-14
nfthorizon.cloudflareaccess.comNot in the scope2026-11-14
nfxinternal.cloudflareaccess.comNot in the scope2026-11-14
nginx.cloudflareaccess.comNot in the scope2026-11-14
nginx-newest.cloudflareaccess.comNot in the scope2026-11-14
nginx-newest1.cloudflareaccess.comNot in the scope2026-11-14
ngmtech.cloudflareaccess.comNot in the scope2026-11-14
nhscan.cloudflareaccess.comNot in the scope2026-11-14
nib-group.cloudflareaccess.comNot in the scope2026-11-14
nic.cloudflareaccess.comNot in the scope2026-11-14
nicoclub.cloudflareaccess.comNot in the scope2026-11-14
nightlight.cloudflareaccess.comNot in the scope2026-11-14
nightscout.cloudflareaccess.comNot in the scope2026-11-14
nihilisme.cloudflareaccess.comNot in the scope2026-11-14
niio.cloudflareaccess.comNot in the scope2026-11-14
nilsgx.cloudflareaccess.comNot in the scope2026-11-14
nimble.cloudflareaccess.comNot in the scope2026-11-14
nimblework.cloudflareaccess.comNot in the scope2026-11-14
nimi23.cloudflareaccess.comNot in the scope2026-11-14
ninjakiwiauth.cloudflareaccess.comNot in the scope2026-11-14
ninjapanel-stagingcfdata.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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