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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
vanessa.ltd.nextcloud.comNot in the scope2026-11-14
viktoria.ltd.nextcloud.comNot in the scope2026-11-14
workingflow.ltd.nextcloud.comNot in the scope2026-11-14
zitsh-ai.ltd.nextcloud.comNot in the scope2026-11-14
ltd1.nextcloud.comNot in the scope2026-11-14
aalborguniversity.ltd1.nextcloud.comNot in the scope2026-11-14
accesa.ltd1.nextcloud.comNot in the scope2026-11-14
acetelecommunicationstechnology.ltd1.nextcloud.comNot in the scope2026-11-14
adh.ltd1.nextcloud.comNot in the scope2026-11-14
alfaresgroup.ltd1.nextcloud.comNot in the scope2026-11-14
aljal.ltd1.nextcloud.comNot in the scope2026-11-14
amaral-fernandes.ltd1.nextcloud.comNot in the scope2026-11-14
ams.ltd1.nextcloud.comNot in the scope2026-11-14
ams-institute.ltd1.nextcloud.comNot in the scope2026-11-14
ams-test.ltd1.nextcloud.comtestNot in the scope2026-11-14
amx33.ltd1.nextcloud.comNot in the scope2026-11-14
aoknw.ltd1.nextcloud.comNot in the scope2026-11-14
arcade.ltd1.nextcloud.comNot in the scope2026-11-14
arsium.ltd1.nextcloud.comNot in the scope2026-11-14
atghana.ltd1.nextcloud.comNot in the scope2026-11-14
ats-montagna.ltd1.nextcloud.comNot in the scope2026-11-14
august-ullrich.ltd1.nextcloud.comNot in the scope2026-11-14
avaali.ltd1.nextcloud.comNot in the scope2026-11-14
azercell.ltd1.nextcloud.comNot in the scope2026-11-14
bah.ltd1.nextcloud.comNot in the scope2026-11-14
balansit.ltd1.nextcloud.comNot in the scope2026-11-14
bavitechsystems.ltd1.nextcloud.comNot in the scope2026-11-14
bexio-ocs.ltd1.nextcloud.comNot in the scope2026-11-14
beyonditl.ltd1.nextcloud.comNot in the scope2026-11-14
bfr.ltd1.nextcloud.comNot in the scope2026-11-14
bilqisdemos01.ltd1.nextcloud.comNot in the scope2026-11-14
bilqistechnology.ltd1.nextcloud.comNot in the scope2026-11-14
biomerieux.ltd1.nextcloud.comNot in the scope2026-11-14
bitwizards.ltd1.nextcloud.comNot in the scope2026-11-14
bjoern.ltd1.nextcloud.comNot in the scope2026-11-14
bluechipcomputerscoza.ltd1.nextcloud.comNot in the scope2026-11-14
bodebio.ltd1.nextcloud.comNot in the scope2026-11-14
btgroup.ltd1.nextcloud.comNot in the scope2026-11-14
btucottbus.ltd1.nextcloud.comNot in the scope2026-11-14
bundesanstalt-wasserbau.ltd1.nextcloud.comNot in the scope2026-11-14
caissedesdepots.ltd1.nextcloud.comNot in the scope2026-11-14
canimex.ltd1.nextcloud.comNot in the scope2026-11-14
caritasdortmund.ltd1.nextcloud.comNot in the scope2026-11-14
cboj.ltd1.nextcloud.comNot in the scope2026-11-14
cbs.ltd1.nextcloud.comNot in the scope2026-11-14
cdac.ltd1.nextcloud.comNot in the scope2026-11-14
cegeka.ltd1.nextcloud.comNot in the scope2026-11-14
cegeka1.ltd1.nextcloud.comNot in the scope2026-11-14
cespi.ltd1.nextcloud.comNot in the scope2026-11-14
cgi-whiteboard.ltd1.nextcloud.comNot in the scope2026-11-14
chemnitz.ltd1.nextcloud.comNot in the scope2026-11-14
chris-in-kiel.ltd1.nextcloud.comNot in the scope2026-11-14
chu-poitiers.ltd1.nextcloud.comNot in the scope2026-11-14
cirrus.ltd1.nextcloud.comNot in the scope2026-11-14
cis.ltd1.nextcloud.comNot in the scope2026-11-14
cjis.ltd1.nextcloud.comNot in the scope2026-11-14
clpt.ltd1.nextcloud.comNot in the scope2026-11-14
cnhi.ltd1.nextcloud.comNot in the scope2026-11-14
unifytech.com.ltd1.nextcloud.comNot in the scope2026-11-14
computas.ltd1.nextcloud.comNot in the scope2026-11-14
corex.ltd1.nextcloud.comNot in the scope2026-11-14
cpc.ltd1.nextcloud.comNot in the scope2026-11-14
credit-agricole.ltd1.nextcloud.comNot in the scope2026-11-14
cronosgroep.ltd1.nextcloud.comNot in the scope2026-11-14
crossroad.ltd1.nextcloud.comNot in the scope2026-11-14
cybernexa.ltd1.nextcloud.comNot in the scope2026-11-14
datavalley.ltd1.nextcloud.comNot in the scope2026-11-14
dcgroup.ltd1.nextcloud.comNot in the scope2026-11-14
dcsys.ltd1.nextcloud.comNot in the scope2026-11-14
dcuk.ltd1.nextcloud.comNot in the scope2026-11-14
declarative-ui.ltd1.nextcloud.comNot in the scope2026-11-14
decorrespondent.ltd1.nextcloud.comNot in the scope2026-11-14
deepsafer.ltd1.nextcloud.comNot in the scope2026-11-14
demo.ltd1.nextcloud.comtestNot in the scope2026-11-14
deuba24.ltd1.nextcloud.comNot in the scope2026-11-14
dgac-snia.ltd1.nextcloud.comNot in the scope2026-11-14
dienes.ltd1.nextcloud.comNot in the scope2026-11-14
docker28.ltd1.nextcloud.comtoolsNot in the scope2026-11-14
docker28-3.ltd1.nextcloud.comtoolsNot in the scope2026-11-14
dpg.ltd1.nextcloud.comNot in the scope2026-11-14
dts.ltd1.nextcloud.comNot in the scope2026-11-14
du.ltd1.nextcloud.comNot in the scope2026-11-14
dubaifinance.ltd1.nextcloud.comNot in the scope2026-11-14
dubailand.ltd1.nextcloud.comNot in the scope2026-11-14
dunetrails.ltd1.nextcloud.comNot in the scope2026-11-14
dvz-mv.ltd1.nextcloud.comNot in the scope2026-11-14
dzbank.ltd1.nextcloud.comNot in the scope2026-11-14
e2e32.ltd1.nextcloud.comNot in the scope2026-11-14
e2enc32.ltd1.nextcloud.comNot in the scope2026-11-14
ecb.ltd1.nextcloud.comNot in the scope2026-11-14
ecotel.ltd1.nextcloud.comNot in the scope2026-11-14
edpb.ltd1.nextcloud.comNot in the scope2026-11-14
educant.ltd1.nextcloud.comNot in the scope2026-11-14
egnc.ltd1.nextcloud.comNot in the scope2026-11-14
eis.ltd1.nextcloud.comNot in the scope2026-11-14
ekom21.ltd1.nextcloud.comNot in the scope2026-11-14
elisa.ltd1.nextcloud.comNot in the scope2026-11-14
engitech.ltd1.nextcloud.comNot in the scope2026-11-14
enisa.ltd1.nextcloud.comNot in the scope2026-11-14
eo.ltd1.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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