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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/Analysed#2946927No weakness recorded2025-03-16–113
Mail contact autocomplete bypasses administrator-configured user enumeration restrictions and expose member information outside the intended scopeAnalysed#3617729Information Disclosure2026-09-04$250101
PIN bypass in PassCodeActivity via back buttonAnalysed#3625210Authentication2026-06-07$150101
Group restriction bypass via bearer token in user_oidc (SETTING_RESTRICT_LOGIN_TO_GROUPS not enforced in Backend::getCurrentUserId)Analysed#3572848Access Control2026-05-21$150100

Subdomains1,642

Subdomains of Nextcloud
NameScopeFirst seen
soprasteria.ltd2.nextcloud.comNot in the scope2026-11-14
specialzoom.ltd2.nextcloud.comNot in the scope2026-11-14
stadgent3.ltd2.nextcloud.comNot in the scope2026-11-14
stadt-herzberg.ltd2.nextcloud.comNot in the scope2026-11-14
stamm.ltd2.nextcloud.comNot in the scope2026-11-14
steng.ltd2.nextcloud.comNot in the scope2026-11-14
sturno.ltd2.nextcloud.comNot in the scope2026-11-14
sviluppolavoro.ltd2.nextcloud.comNot in the scope2026-11-14
swingactions.ltd2.nextcloud.comNot in the scope2026-11-14
syabetechnologies.ltd2.nextcloud.comNot in the scope2026-11-14
sysgo.ltd2.nextcloud.comNot in the scope2026-11-14
sysnect.ltd2.nextcloud.comNot in the scope2026-11-14
sysnova.ltd2.nextcloud.comNot in the scope2026-11-14
t1212.ltd2.nextcloud.comNot in the scope2026-11-14
tags.ltd2.nextcloud.comNot in the scope2026-11-14
talentapro.ltd2.nextcloud.comNot in the scope2026-11-14
tamam.ltd2.nextcloud.comNot in the scope2026-11-14
tanzaniacommercialbank.ltd2.nextcloud.comNot in the scope2026-11-14
tattersalllorenz.ltd2.nextcloud.comNot in the scope2026-11-14
techcos.ltd2.nextcloud.comNot in the scope2026-11-14
telefonica.ltd2.nextcloud.comNot in the scope2026-11-14
telia.ltd2.nextcloud.comNot in the scope2026-11-14
temple.ltd2.nextcloud.comNot in the scope2026-11-14
test.ltd2.nextcloud.comtestNot in the scope2026-11-14
test121314.ltd2.nextcloud.comtestNot in the scope2026-11-14
test3.ltd2.nextcloud.comtestNot in the scope2026-11-14
testing.ltd2.nextcloud.comtestNot in the scope2026-11-14
testoo.ltd2.nextcloud.comNot in the scope2026-11-14
testtobi.ltd2.nextcloud.comNot in the scope2026-11-14
thales-si-dr.ltd2.nextcloud.comNot in the scope2026-11-14
the-collective.ltd2.nextcloud.comNot in the scope2026-11-14
thermofisher.ltd2.nextcloud.comNot in the scope2026-11-14
tmdm.ltd2.nextcloud.comNot in the scope2026-11-14
tmgcloudland.ltd2.nextcloud.comNot in the scope2026-11-14
tobias.ltd2.nextcloud.comNot in the scope2026-11-14
tobias1.ltd2.nextcloud.comNot in the scope2026-11-14
tobias2.ltd2.nextcloud.comNot in the scope2026-11-14
transgenderlawcenter.ltd2.nextcloud.comNot in the scope2026-11-14
tsystems.ltd2.nextcloud.comNot in the scope2026-11-14
uaepass.ltd2.nextcloud.comNot in the scope2026-11-14
ubm.ltd2.nextcloud.comNot in the scope2026-11-14
uddevalla.ltd2.nextcloud.comNot in the scope2026-11-14
ues.ltd2.nextcloud.comNot in the scope2026-11-14
ufcquechoisir.ltd2.nextcloud.comNot in the scope2026-11-14
ufrgs.ltd2.nextcloud.comNot in the scope2026-11-14
un.ltd2.nextcloud.comNot in the scope2026-11-14
unitednations.ltd2.nextcloud.comNot in the scope2026-11-14
universitaetsklinikum-leipzig.ltd2.nextcloud.comNot in the scope2026-11-14
universitedeliege.ltd2.nextcloud.comNot in the scope2026-11-14
unodata.ltd2.nextcloud.comNot in the scope2026-11-14
uppercasetest.ltd2.nextcloud.comNot in the scope2026-11-14
vayu.ltd2.nextcloud.comNot in the scope2026-11-14
verbandsgemeindeverwaltung-rengsdorf.ltd2.nextcloud.comNot in the scope2026-11-14
vialutions.ltd2.nextcloud.comNot in the scope2026-11-14
vianova.ltd2.nextcloud.comNot in the scope2026-11-14
videoluctv.ltd2.nextcloud.comNot in the scope2026-11-14
viktortest.ltd2.nextcloud.comNot in the scope2026-11-14
visarjin.ltd2.nextcloud.comNot in the scope2026-11-14
vodacom.ltd2.nextcloud.comNot in the scope2026-11-14
volkswagen.ltd2.nextcloud.comNot in the scope2026-11-14
vwn.ltd2.nextcloud.comNot in the scope2026-11-14
wavestone.ltd2.nextcloud.comNot in the scope2026-11-14
wb.ltd2.nextcloud.comNot in the scope2026-11-14
wbe.ltd2.nextcloud.comNot in the scope2026-11-14
webinar.ltd2.nextcloud.comNot in the scope2026-11-14
werkpleknoord.ltd2.nextcloud.comNot in the scope2026-11-14
who.ltd2.nextcloud.comNot in the scope2026-11-14
widasconcepts.ltd2.nextcloud.comNot in the scope2026-11-14
windmill.ltd2.nextcloud.comNot in the scope2026-11-14
winnipeg.ltd2.nextcloud.comNot in the scope2026-11-14
woodsbagot.ltd2.nextcloud.comNot in the scope2026-11-14
workingflow.ltd2.nextcloud.comNot in the scope2026-11-14
wssystemsintegration.ltd2.nextcloud.comNot in the scope2026-11-14
xn--fachverbandfrkunsttherapie-9zc.ltd2.nextcloud.comNot in the scope2026-11-14
xn--geopartnerlandinspektrer-lqc.ltd2.nextcloud.comNot in the scope2026-11-14
xn--goereeoverflakkee-e02j.ltd2.nextcloud.comNot in the scope2026-11-14
xn--landkreis-grogerau-7qb.ltd2.nextcloud.comNot in the scope2026-11-14
xn--parisaroport-geb.ltd2.nextcloud.comNot in the scope2026-11-14
xn--unidadnacionalparalagestindelriesgodedesastres-fpe.ltd2.nextcloud.comNot in the scope2026-11-14
xn--universit-bordeaux-montaigne-jrc.ltd2.nextcloud.comNot in the scope2026-11-14
xn--yncra-esa.ltd2.nextcloud.comNot in the scope2026-11-14
yachtline1618.ltd2.nextcloud.comNot in the scope2026-11-14
yam.ltd2.nextcloud.comNot in the scope2026-11-14
yannix.ltd2.nextcloud.comNot in the scope2026-11-14
yncrea.ltd2.nextcloud.comNot in the scope2026-11-14
zen-systems.ltd2.nextcloud.comNot in the scope2026-11-14
zerolock.ltd2.nextcloud.comNot in the scope2026-11-14
zitsh.ltd2.nextcloud.comNot in the scope2026-11-14
ltd3.nextcloud.comNot in the scope2026-11-14
1more.ltd3.nextcloud.comNot in the scope2026-11-14
45drives.ltd3.nextcloud.comNot in the scope2026-11-14
abraxas.ltd3.nextcloud.comNot in the scope2026-11-14
absher.ltd3.nextcloud.comNot in the scope2026-11-14
accenture.ltd3.nextcloud.comNot in the scope2026-11-14
accesa.ltd3.nextcloud.comNot in the scope2026-11-14
ace-cloud-hosting.ltd3.nextcloud.comNot in the scope2026-11-14
aeg-power-solutions.ltd3.nextcloud.comNot in the scope2026-11-14
aem-august.ltd3.nextcloud.comNot in the scope2026-11-14
alesundfhs.ltd3.nextcloud.comNot in the scope2026-11-14
alexanderm2.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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