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Bug bounty program

Platform
HackerOne
Bounties
Pays
Assets in scope
94
Disclosed reports
613
Subdomains
1,642
Vendor on CyberSIXT
Nextcloud (399 CVEs, 0 exploited)

Most upvoted reports613

All reports
Most upvoted reports of Nextcloud
ReportWeaknessDisclosedBountyVotes
Code injection possible with malformed Nextcloud Talk chat commandsAnalysed#851807Command and Code Injection2020-06-02–317
User can delete data in shared folders he's not autorized to accessAnalysed#642515Access Control2020-04-10–173
Access to all files of remote user through shared fileAnalysed#258084Information Disclosure2020-03-01–154
Attacker can obtain write access to any federated share/public linkAnalysed#1170024Authentication2021-06-10$4,000142
Missing ownership check on remote wipe endpointAnalysed#819807Insecure Direct Object Reference2020-04-19$500141
Remote Code Execution via Extract App PluginAnalysed#546753Command and Code Injection2019-05-30–124
Sensitive Information Disclosure via Back Button Post Logout on https://apps.nextcloud.com/account/#2946927No weakness recorded2025-03-16–113
Mail contact autocomplete bypasses administrator-configured user enumeration restrictions and expose member information outside the intended scope#3617729Information Disclosure2026-09-04$250101
PIN bypass in PassCodeActivity via back button#3625210Authentication2026-06-07$150101
Group restriction bypass via bearer token in user_oidc (SETTING_RESTRICT_LOGIN_TO_GROUPS not enforced in Backend::getCurrentUserId)#3572848Access Control2026-05-21$150100

Subdomains1,642

Subdomains of Nextcloud
NameScopeFirst seen
alignedrisk.ltd3.nextcloud.comNot in the scope2026-11-14
alliade.ltd3.nextcloud.comNot in the scope2026-11-14
alptis.ltd3.nextcloud.comNot in the scope2026-11-14
amf.ltd3.nextcloud.comNot in the scope2026-11-14
amf-plane-cedre.ltd3.nextcloud.comNot in the scope2026-11-14
ampran.ltd3.nextcloud.comNot in the scope2026-11-14
amx.ltd3.nextcloud.comNot in the scope2026-11-14
anct.ltd3.nextcloud.comNot in the scope2026-11-14
anderson.ltd3.nextcloud.comNot in the scope2026-11-14
anneboivent.ltd3.nextcloud.comNot in the scope2026-11-14
aoknw.ltd3.nextcloud.comNot in the scope2026-11-14
apuracloud.ltd3.nextcloud.comNot in the scope2026-11-14
arc.ltd3.nextcloud.comNot in the scope2026-11-14
ariane.ltd3.nextcloud.comNot in the scope2026-11-14
asapcloud.ltd3.nextcloud.comNot in the scope2026-11-14
asiasat.ltd3.nextcloud.comNot in the scope2026-11-14
automationanywhere.ltd3.nextcloud.comNot in the scope2026-11-14
axess-internal.ltd3.nextcloud.cominternalNot in the scope2026-11-14
azercell1.ltd3.nextcloud.comNot in the scope2026-11-14
badtoelz.ltd3.nextcloud.comNot in the scope2026-11-14
bca.ltd3.nextcloud.comNot in the scope2026-11-14
bexio-ocs.ltd3.nextcloud.comNot in the scope2026-11-14
beyonditl.ltd3.nextcloud.comNot in the scope2026-11-14
bibliotheekrivierenland.ltd3.nextcloud.comNot in the scope2026-11-14
bjoern-test.ltd3.nextcloud.comtestNot in the scope2026-11-14
bjoern-test2.ltd3.nextcloud.comtestNot in the scope2026-11-14
bluechipcomputerscoza.ltd3.nextcloud.comNot in the scope2026-11-14
bluerhine.ltd3.nextcloud.comNot in the scope2026-11-14
bluesoft.ltd3.nextcloud.comNot in the scope2026-11-14
blurock.ltd3.nextcloud.comNot in the scope2026-11-14
bnp-it.ltd3.nextcloud.comNot in the scope2026-11-14
boothwyn.ltd3.nextcloud.comNot in the scope2026-11-14
bottlecomnp.ltd3.nextcloud.comNot in the scope2026-11-14
boysen.ltd3.nextcloud.comNot in the scope2026-11-14
brahimdemo.ltd3.nextcloud.comNot in the scope2026-11-14
bsu.ltd3.nextcloud.comNot in the scope2026-11-14
btgroup.ltd3.nextcloud.comNot in the scope2026-11-14
cablecolor.ltd3.nextcloud.comNot in the scope2026-11-14
caregility.ltd3.nextcloud.comNot in the scope2026-11-14
cbb.ltd3.nextcloud.comNot in the scope2026-11-14
cef.ltd3.nextcloud.comNot in the scope2026-11-14
centrehospitaliergueret.ltd3.nextcloud.comNot in the scope2026-11-14
centric-demo.ltd3.nextcloud.comtestNot in the scope2026-11-14
chu-poitiers.ltd3.nextcloud.comNot in the scope2026-11-14
cityofxenia.ltd3.nextcloud.comNot in the scope2026-11-14
clearspace.ltd3.nextcloud.comNot in the scope2026-11-14
cloudcom.ltd3.nextcloud.comNot in the scope2026-11-14
cnes.ltd3.nextcloud.comNot in the scope2026-11-14
coe.ltd3.nextcloud.comNot in the scope2026-11-14
compassion.ltd3.nextcloud.comNot in the scope2026-11-14
conseildeleurope.ltd3.nextcloud.comNot in the scope2026-11-14
converge.ltd3.nextcloud.comNot in the scope2026-11-14
cool.ltd3.nextcloud.comNot in the scope2026-11-14
create.ltd3.nextcloud.comNot in the scope2026-11-14
croz.ltd3.nextcloud.comNot in the scope2026-11-14
crud.ltd3.nextcloud.comNot in the scope2026-11-14
ctc-global.ltd3.nextcloud.comNot in the scope2026-11-14
ctie.ltd3.nextcloud.comNot in the scope2026-11-14
ctrd.ltd3.nextcloud.comNot in the scope2026-11-14
ctrd2.ltd3.nextcloud.comNot in the scope2026-11-14
dandemutande.ltd3.nextcloud.comNot in the scope2026-11-14
dataextreme.ltd3.nextcloud.comNot in the scope2026-11-14
dataport.ltd3.nextcloud.comNot in the scope2026-11-14
datasystems.ltd3.nextcloud.comNot in the scope2026-11-14
datwyler-itinfra.ltd3.nextcloud.comNot in the scope2026-11-14
deckbenchmark1.ltd3.nextcloud.comNot in the scope2026-11-14
desktopteam.ltd3.nextcloud.comNot in the scope2026-11-14
developpement-durable.ltd3.nextcloud.comNot in the scope2026-11-14
dienetzwerft.ltd3.nextcloud.comNot in the scope2026-11-14
digitme.ltd3.nextcloud.comNot in the scope2026-11-14
dkfzb1nc.ltd3.nextcloud.comNot in the scope2026-11-14
dmsoumi.ltd3.nextcloud.comNot in the scope2026-11-14
doebeln.ltd3.nextcloud.comNot in the scope2026-11-14
dot-cloud.ltd3.nextcloud.comNot in the scope2026-11-14
dougallmedia.ltd3.nextcloud.comNot in the scope2026-11-14
dsloregon.ltd3.nextcloud.comNot in the scope2026-11-14
dsta.ltd3.nextcloud.comNot in the scope2026-11-14
dubaifinance.ltd3.nextcloud.comNot in the scope2026-11-14
dunetrails.ltd3.nextcloud.comNot in the scope2026-11-14
dynaflow.ltd3.nextcloud.comNot in the scope2026-11-14
e-comm911.ltd3.nextcloud.comNot in the scope2026-11-14
e2e-av.ltd3.nextcloud.comNot in the scope2026-11-14
eandbusiness.ltd3.nextcloud.comNot in the scope2026-11-14
easyteam.ltd3.nextcloud.comNot in the scope2026-11-14
ebrz.ltd3.nextcloud.comNot in the scope2026-11-14
eco-consult.ltd3.nextcloud.comNot in the scope2026-11-14
econettelecom.ltd3.nextcloud.comNot in the scope2026-11-14
ecotel.ltd3.nextcloud.comNot in the scope2026-11-14
edf.ltd3.nextcloud.comNot in the scope2026-11-14
edugech.ltd3.nextcloud.comNot in the scope2026-11-14
eeas.ltd3.nextcloud.comNot in the scope2026-11-14
egov-jamaica.ltd3.nextcloud.comNot in the scope2026-11-14
ejie.ltd3.nextcloud.comNot in the scope2026-11-14
embassy-israel.ltd3.nextcloud.comNot in the scope2026-11-14
entinux.ltd3.nextcloud.comNot in the scope2026-11-14
malaga.es.ltd3.nextcloud.comNot in the scope2026-11-14
eu-commission.ltd3.nextcloud.comNot in the scope2026-11-14
evg.ltd3.nextcloud.comNot in the scope2026-11-14
ewcf.ltd3.nextcloud.comNot in the scope2026-11-14
ex1.ltd3.nextcloud.comNot in the scope2026-11-14

23 names are covered by the program's own scope; 0 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 2026-11-14.

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