Skip to content

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
test123.ltd3.nextcloud.comtestNot in the scope2026-11-14
test2.ltd3.nextcloud.comtestNot in the scope2026-11-14
thales.ltd3.nextcloud.comNot in the scope2026-11-14
thdeg.ltd3.nextcloud.comNot in the scope2026-11-14
thermofisher.ltd3.nextcloud.comNot in the scope2026-11-14
theuniversityofwaikato.ltd3.nextcloud.comNot in the scope2026-11-14
thinkfree.ltd3.nextcloud.comNot in the scope2026-11-14
tigerbeer.ltd3.nextcloud.comNot in the scope2026-11-14
tls.ltd3.nextcloud.comNot in the scope2026-11-14
tlscontact.ltd3.nextcloud.comNot in the scope2026-11-14
tngtech.ltd3.nextcloud.comNot in the scope2026-11-14
tobi1.ltd3.nextcloud.comNot in the scope2026-11-14
tobi2.ltd3.nextcloud.comNot in the scope2026-11-14
tobias.ltd3.nextcloud.comNot in the scope2026-11-14
tos.ltd3.nextcloud.comNot in the scope2026-11-14
traceis.ltd3.nextcloud.comNot in the scope2026-11-14
tuchtest.ltd3.nextcloud.comNot in the scope2026-11-14
uac.ltd3.nextcloud.comNot in the scope2026-11-14
ucsf.ltd3.nextcloud.comNot in the scope2026-11-14
ungrdco.ltd3.nextcloud.comNot in the scope2026-11-14
unidosmn.ltd3.nextcloud.comNot in the scope2026-11-14
unionen.ltd3.nextcloud.comNot in the scope2026-11-14
updateyou.ltd3.nextcloud.comNot in the scope2026-11-14
usb-bochum.ltd3.nextcloud.comNot in the scope2026-11-14
usnavyamy.ltd3.nextcloud.comNot in the scope2026-11-14
vater.ltd3.nextcloud.comNot in the scope2026-11-14
vde-verlag.ltd3.nextcloud.comNot in the scope2026-11-14
version.ltd3.nextcloud.comNot in the scope2026-11-14
viacare.ltd3.nextcloud.comNot in the scope2026-11-14
vivavis.ltd3.nextcloud.comNot in the scope2026-11-14
vng.ltd3.nextcloud.comNot in the scope2026-11-14
warner.ltd3.nextcloud.comNot in the scope2026-11-14
watadtech.ltd3.nextcloud.comNot in the scope2026-11-14
wateen.ltd3.nextcloud.comNot in the scope2026-11-14
wcf.ltd3.nextcloud.comNot in the scope2026-11-14
wenzel-logistic.ltd3.nextcloud.comNot in the scope2026-11-14
wetteraukreis-office.ltd3.nextcloud.comNot in the scope2026-11-14
white.ltd3.nextcloud.comNot in the scope2026-11-14
wilma.ltd3.nextcloud.comNot in the scope2026-11-14
winterbach.ltd3.nextcloud.comNot in the scope2026-11-14
witherbys.ltd3.nextcloud.comNot in the scope2026-11-14
wpnsa.ltd3.nextcloud.comNot in the scope2026-11-14
wyzetech.ltd3.nextcloud.comNot in the scope2026-11-14
xn--niederschsisches-landesamt-bau-liegenschaften-w0d.ltd3.nextcloud.comNot in the scope2026-11-14
yncrea.ltd3.nextcloud.comNot in the scope2026-11-14
zainsa.ltd3.nextcloud.comNot in the scope2026-11-14
ziemannholvrieka.ltd3.nextcloud.comNot in the scope2026-11-14
zja.ltd3.nextcloud.comNot in the scope2026-11-14
ltd4.nextcloud.comNot in the scope2026-11-14
2020outfitllc.ltd4.nextcloud.comNot in the scope2026-11-14
accesa.ltd4.nextcloud.comNot in the scope2026-11-14
activecampaign.ltd4.nextcloud.comNot in the scope2026-11-14
adminbyrequest.ltd4.nextcloud.comNot in the scope2026-11-14
alconcysec.ltd4.nextcloud.comNot in the scope2026-11-14
alexanderm.ltd4.nextcloud.comNot in the scope2026-11-14
altenkirchen-flammersfeld.ltd4.nextcloud.comNot in the scope2026-11-14
ambulancezorglimburg.ltd4.nextcloud.comNot in the scope2026-11-14
amt.ltd4.nextcloud.comNot in the scope2026-11-14
amx31.ltd4.nextcloud.comNot in the scope2026-11-14
apeldoorn.ltd4.nextcloud.comNot in the scope2026-11-14
arass.ltd4.nextcloud.comNot in the scope2026-11-14
arcachon.ltd4.nextcloud.comNot in the scope2026-11-14
asapcloud.ltd4.nextcloud.comNot in the scope2026-11-14
asllecce.ltd4.nextcloud.comNot in the scope2026-11-14
austinfriars.ltd4.nextcloud.comNot in the scope2026-11-14
autgovtest.ltd4.nextcloud.comNot in the scope2026-11-14
axevalla.ltd4.nextcloud.comNot in the scope2026-11-14
axione.ltd4.nextcloud.comNot in the scope2026-11-14
bbbell.ltd4.nextcloud.comNot in the scope2026-11-14
bde.ltd4.nextcloud.comNot in the scope2026-11-14
bechtlebonn.ltd4.nextcloud.comNot in the scope2026-11-14
bechtlech.ltd4.nextcloud.comNot in the scope2026-11-14
bist.ltd4.nextcloud.comNot in the scope2026-11-14
bjoern.ltd4.nextcloud.comNot in the scope2026-11-14
bjoern-conf-test.ltd4.nextcloud.comtestNot in the scope2026-11-14
bmf.ltd4.nextcloud.comNot in the scope2026-11-14
bnnvara.ltd4.nextcloud.comNot in the scope2026-11-14
brandingovation.ltd4.nextcloud.comNot in the scope2026-11-14
btcag.ltd4.nextcloud.comNot in the scope2026-11-14
butzbach.ltd4.nextcloud.comNot in the scope2026-11-14
cabildo-de-lanzarote.ltd4.nextcloud.comNot in the scope2026-11-14
caisse-des-depots.ltd4.nextcloud.comNot in the scope2026-11-14
capzul-canada.ltd4.nextcloud.comNot in the scope2026-11-14
cbs.ltd4.nextcloud.comNot in the scope2026-11-14
centric.ltd4.nextcloud.comNot in the scope2026-11-14
centrius.ltd4.nextcloud.comNot in the scope2026-11-14
centurywest.ltd4.nextcloud.comNot in the scope2026-11-14
cgi.ltd4.nextcloud.comNot in the scope2026-11-14
churchofscientology.ltd4.nextcloud.comNot in the scope2026-11-14
cloudica.ltd4.nextcloud.comNot in the scope2026-11-14
cloudinspireio.ltd4.nextcloud.comNot in the scope2026-11-14
cloudnetworktechnology.ltd4.nextcloud.comNot in the scope2026-11-14
cmcom.ltd4.nextcloud.comNot in the scope2026-11-14
cocomin.ltd4.nextcloud.comNot in the scope2026-11-14
codeuniquearchitekten.ltd4.nextcloud.comNot in the scope2026-11-14
colegioholandes.ltd4.nextcloud.comNot in the scope2026-11-14
compliag.ltd4.nextcloud.comNot in the scope2026-11-14
copernicuslac.ltd4.nextcloud.comNot in the scope2026-11-14
corex.ltd4.nextcloud.comNot in the scope2026-11-14
cra.ltd4.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.

Updated AboutDevelopersSign in