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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
mbod-11.ltd4.nextcloud.comNot in the scope2026-11-14
mbod-14.ltd4.nextcloud.comNot in the scope2026-11-14
mbod-18.ltd4.nextcloud.comNot in the scope2026-11-14
mbod-22.ltd4.nextcloud.comNot in the scope2026-11-14
mcgill.ltd4.nextcloud.comNot in the scope2026-11-14
medialoc.ltd4.nextcloud.comNot in the scope2026-11-14
mediasolutiongroup.ltd4.nextcloud.comNot in the scope2026-11-14
metpolice.ltd4.nextcloud.comNot in the scope2026-11-14
metpolice2.ltd4.nextcloud.comNot in the scope2026-11-14
midhani.ltd4.nextcloud.comNot in the scope2026-11-14
miklait.ltd4.nextcloud.comNot in the scope2026-11-14
minienw.ltd4.nextcloud.comNot in the scope2026-11-14
mitcmw.ltd4.nextcloud.comNot in the scope2026-11-14
mosameat.ltd4.nextcloud.comNot in the scope2026-11-14
mp-defensa.ltd4.nextcloud.comNot in the scope2026-11-14
mts.ltd4.nextcloud.comNot in the scope2026-11-14
mumc.ltd4.nextcloud.comNot in the scope2026-11-14
munich.ltd4.nextcloud.comNot in the scope2026-11-14
mybit-innovation.ltd4.nextcloud.comNot in the scope2026-11-14
nav.ltd4.nextcloud.comNot in the scope2026-11-14
netfixai.ltd4.nextcloud.comNot in the scope2026-11-14
netic.ltd4.nextcloud.comNot in the scope2026-11-14
netrics-ch.ltd4.nextcloud.comNot in the scope2026-11-14
netuno.ltd4.nextcloud.comNot in the scope2026-11-14
newmedia.ltd4.nextcloud.comNot in the scope2026-11-14
nitec.ltd4.nextcloud.comNot in the scope2026-11-14
noorderzon.ltd4.nextcloud.comNot in the scope2026-11-14
noxtua.ltd4.nextcloud.comNot in the scope2026-11-14
nuvamawealth.ltd4.nextcloud.comNot in the scope2026-11-14
officekomplett.ltd4.nextcloud.comNot in the scope2026-11-14
onnitnl.ltd4.nextcloud.comNot in the scope2026-11-14
onperu.ltd4.nextcloud.comNot in the scope2026-11-14
ooredoo.ltd4.nextcloud.comNot in the scope2026-11-14
optibelt.ltd4.nextcloud.comNot in the scope2026-11-14
otech-demo.ltd4.nextcloud.comtestNot in the scope2026-11-14
paillard.ltd4.nextcloud.comNot in the scope2026-11-14
pels-rijcken.ltd4.nextcloud.comNot in the scope2026-11-14
plattegmbh.ltd4.nextcloud.comNot in the scope2026-11-14
pmiag.ltd4.nextcloud.comNot in the scope2026-11-14
pragma.ltd4.nextcloud.comNot in the scope2026-11-14
prianto.ltd4.nextcloud.comNot in the scope2026-11-14
primaafrica.ltd4.nextcloud.comNot in the scope2026-11-14
proact.ltd4.nextcloud.comNot in the scope2026-11-14
procolix.ltd4.nextcloud.comNot in the scope2026-11-14
psaigroup.ltd4.nextcloud.comNot in the scope2026-11-14
psstjdedd.ltd4.nextcloud.comNot in the scope2026-11-14
push.ltd4.nextcloud.comNot in the scope2026-11-14
quantum-systems.ltd4.nextcloud.comNot in the scope2026-11-14
ram.ltd4.nextcloud.comNot in the scope2026-11-14
rhein-erft.ltd4.nextcloud.comNot in the scope2026-11-14
rietveldacademie.ltd4.nextcloud.comNot in the scope2026-11-14
rigterink.ltd4.nextcloud.comNot in the scope2026-11-14
romaco.ltd4.nextcloud.comNot in the scope2026-11-14
rpgihessen.ltd4.nextcloud.comNot in the scope2026-11-14
saaris.ltd4.nextcloud.comNot in the scope2026-11-14
sahabraqmy.ltd4.nextcloud.comNot in the scope2026-11-14
sccon.ltd4.nextcloud.comNot in the scope2026-11-14
schweikert-gmbh.ltd4.nextcloud.comNot in the scope2026-11-14
scout-fee.ltd4.nextcloud.comNot in the scope2026-11-14
sebtest456.ltd4.nextcloud.comNot in the scope2026-11-14
sener.ltd4.nextcloud.comNot in the scope2026-11-14
sgdsn.ltd4.nextcloud.comNot in the scope2026-11-14
sinnack.ltd4.nextcloud.comNot in the scope2026-11-14
sisag.ltd4.nextcloud.comNot in the scope2026-11-14
site.ltd4.nextcloud.comNot in the scope2026-11-14
socion.ltd4.nextcloud.comNot in the scope2026-11-14
softwareone.ltd4.nextcloud.comNot in the scope2026-11-14
soudah.ltd4.nextcloud.comNot in the scope2026-11-14
splendid-internet.ltd4.nextcloud.comNot in the scope2026-11-14
sportbundrheinhessen.ltd4.nextcloud.comNot in the scope2026-11-14
stadt-lueneburg.ltd4.nextcloud.comNot in the scope2026-11-14
stadtwillich.ltd4.nextcloud.comNot in the scope2026-11-14
stepsolutions.ltd4.nextcloud.comNot in the scope2026-11-14
stisc.ltd4.nextcloud.comNot in the scope2026-11-14
stockholmuniversity.ltd4.nextcloud.comNot in the scope2026-11-14
studiocaratozzolo.ltd4.nextcloud.comNot in the scope2026-11-14
stv-dortmund.ltd4.nextcloud.comNot in the scope2026-11-14
suez.ltd4.nextcloud.comNot in the scope2026-11-14
sva.ltd4.nextcloud.comNot in the scope2026-11-14
synapsysconseils.ltd4.nextcloud.comNot in the scope2026-11-14
syss.ltd4.nextcloud.comNot in the scope2026-11-14
t12345.ltd4.nextcloud.comNot in the scope2026-11-14
tanmiah.ltd4.nextcloud.comNot in the scope2026-11-14
tbc.ltd4.nextcloud.comNot in the scope2026-11-14
deda.tech.ltd4.nextcloud.comNot in the scope2026-11-14
test-tos.ltd4.nextcloud.comtestNot in the scope2026-11-14
test3.ltd4.nextcloud.comtestNot in the scope2026-11-14
test4.ltd4.nextcloud.comtestNot in the scope2026-11-14
testeo.ltd4.nextcloud.comNot in the scope2026-11-14
texas.ltd4.nextcloud.comNot in the scope2026-11-14
th-rosenheim.ltd4.nextcloud.comNot in the scope2026-11-14
thelagosstategovt.ltd4.nextcloud.comNot in the scope2026-11-14
thermofisher.ltd4.nextcloud.comNot in the scope2026-11-14
tiger-technology.ltd4.nextcloud.comNot in the scope2026-11-14
tim2.ltd4.nextcloud.comNot in the scope2026-11-14
topas.ltd4.nextcloud.comNot in the scope2026-11-14
tos.ltd4.nextcloud.comNot in the scope2026-11-14
tos2.ltd4.nextcloud.comNot in the scope2026-11-14
toshibatec.ltd4.nextcloud.comNot in the scope2026-11-14
toucherp.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.

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