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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
pagination.ltd1.nextcloud.comNot in the scope2026-11-14
pcs.ltd1.nextcloud.comNot in the scope2026-11-14
pdg.ltd1.nextcloud.comNot in the scope2026-11-14
pdod.ltd1.nextcloud.comNot in the scope2026-11-14
pexip.ltd1.nextcloud.comNot in the scope2026-11-14
pifoffice.ltd1.nextcloud.comNot in the scope2026-11-14
pomologenverein.ltd1.nextcloud.comNot in the scope2026-11-14
pplsi.ltd1.nextcloud.comNot in the scope2026-11-14
pqr.ltd1.nextcloud.comNot in the scope2026-11-14
procolix.ltd1.nextcloud.comNot in the scope2026-11-14
prosethsolutions.ltd1.nextcloud.comNot in the scope2026-11-14
prov-macerata.ltd1.nextcloud.comNot in the scope2026-11-14
qloud.ltd1.nextcloud.comNot in the scope2026-11-14
qqinfo.ltd1.nextcloud.comNot in the scope2026-11-14
ram.ltd1.nextcloud.comNot in the scope2026-11-14
rapidcompute.ltd1.nextcloud.comNot in the scope2026-11-14
rekeep.ltd1.nextcloud.comNot in the scope2026-11-14
lsjv.rlp.ltd1.nextcloud.comNot in the scope2026-11-14
s3torage.ltd1.nextcloud.comNot in the scope2026-11-14
sabytel.ltd1.nextcloud.comNot in the scope2026-11-14
sar.ltd1.nextcloud.comNot in the scope2026-11-14
sauter-gmbh.ltd1.nextcloud.comNot in the scope2026-11-14
sccon2.ltd1.nextcloud.comNot in the scope2026-11-14
schwarzit.ltd1.nextcloud.comNot in the scope2026-11-14
schweikert.ltd1.nextcloud.comNot in the scope2026-11-14
secunet.ltd1.nextcloud.comNot in the scope2026-11-14
securedd.ltd1.nextcloud.comNot in the scope2026-11-14
security.ltd1.nextcloud.comNot in the scope2026-11-14
senju.ltd1.nextcloud.comNot in the scope2026-11-14
sennheiser.ltd1.nextcloud.comNot in the scope2026-11-14
sgdsn.ltd1.nextcloud.comNot in the scope2026-11-14
shubert.ltd1.nextcloud.comNot in the scope2026-11-14
sigonagolfclub.ltd1.nextcloud.comNot in the scope2026-11-14
skytechs.ltd1.nextcloud.comNot in the scope2026-11-14
skyworth.ltd1.nextcloud.comNot in the scope2026-11-14
smartsynergy.ltd1.nextcloud.comNot in the scope2026-11-14
soprasteria-alcatraz.ltd1.nextcloud.comNot in the scope2026-11-14
sse.ltd1.nextcloud.comNot in the scope2026-11-14
sst.ltd1.nextcloud.comNot in the scope2026-11-14
stadtgraz.ltd1.nextcloud.comNot in the scope2026-11-14
stadtpaderborn.ltd1.nextcloud.comNot in the scope2026-11-14
stadtverwaltungmemmingen.ltd1.nextcloud.comNot in the scope2026-11-14
stanforduniversity.ltd1.nextcloud.comNot in the scope2026-11-14
stelisabethgruppe.ltd1.nextcloud.comNot in the scope2026-11-14
stewartstern.ltd1.nextcloud.comNot in the scope2026-11-14
streamlineit.ltd1.nextcloud.comNot in the scope2026-11-14
stv-dortmund.ltd1.nextcloud.comNot in the scope2026-11-14
sva.ltd1.nextcloud.comNot in the scope2026-11-14
swarovski.ltd1.nextcloud.comNot in the scope2026-11-14
t34.ltd1.nextcloud.comNot in the scope2026-11-14
taco.ltd1.nextcloud.comNot in the scope2026-11-14
tags.ltd1.nextcloud.comNot in the scope2026-11-14
tamweel-aloula.ltd1.nextcloud.comNot in the scope2026-11-14
deda.tech.ltd1.nextcloud.comNot in the scope2026-11-14
technobraingroupcom.ltd1.nextcloud.comNot in the scope2026-11-14
telefonica.ltd1.nextcloud.comNot in the scope2026-11-14
test.ltd1.nextcloud.comtestNot in the scope2026-11-14
test123.ltd1.nextcloud.comtestNot in the scope2026-11-14
test1234.ltd1.nextcloud.comtestNot in the scope2026-11-14
test13.ltd1.nextcloud.comtestNot in the scope2026-11-14
test34.ltd1.nextcloud.comtestNot in the scope2026-11-14
test35.ltd1.nextcloud.comtestNot in the scope2026-11-14
testing2.ltd1.nextcloud.comtestNot in the scope2026-11-14
testtest.ltd1.nextcloud.comNot in the scope2026-11-14
tft.ltd1.nextcloud.comNot in the scope2026-11-14
thw.ltd1.nextcloud.comNot in the scope2026-11-14
tirol-kliniken.ltd1.nextcloud.comNot in the scope2026-11-14
tjdeed.ltd1.nextcloud.comNot in the scope2026-11-14
toolsandsolutions.ltd1.nextcloud.comNot in the scope2026-11-14
ubm.ltd1.nextcloud.comNot in the scope2026-11-14
ufs.ltd1.nextcloud.comNot in the scope2026-11-14
uni-bonn.ltd1.nextcloud.comNot in the scope2026-11-14
uni-dui-essen.ltd1.nextcloud.comNot in the scope2026-11-14
unionen.ltd1.nextcloud.comNot in the scope2026-11-14
uniscite.ltd1.nextcloud.comNot in the scope2026-11-14
univ-grenoble-alpes.ltd1.nextcloud.comNot in the scope2026-11-14
universita-brescia.ltd1.nextcloud.comNot in the scope2026-11-14
universita-brescia-3.ltd1.nextcloud.comNot in the scope2026-11-14
universityofwinnipeg.ltd1.nextcloud.comNot in the scope2026-11-14
upb.ltd1.nextcloud.comNot in the scope2026-11-14
utrecht.ltd1.nextcloud.comNot in the scope2026-11-14
v.ltd1.nextcloud.comNot in the scope2026-11-14
valentalgorithms.ltd1.nextcloud.comNot in the scope2026-11-14
vbl.ltd1.nextcloud.comNot in the scope2026-11-14
victoria-test.ltd1.nextcloud.comtestNot in the scope2026-11-14
viewwiser.ltd1.nextcloud.comNot in the scope2026-11-14
vikitest.ltd1.nextcloud.comNot in the scope2026-11-14
vng.ltd1.nextcloud.comNot in the scope2026-11-14
vodacom.ltd1.nextcloud.comNot in the scope2026-11-14
windmill.ltd1.nextcloud.comNot in the scope2026-11-14
worldline.ltd1.nextcloud.comNot in the scope2026-11-14
xn--landkreisgrogerau-hob.ltd1.nextcloud.comNot in the scope2026-11-14
xn--studentkren-48a.ltd1.nextcloud.comNot in the scope2026-11-14
xn--ungrd-gy73doc.ltd1.nextcloud.comNot in the scope2026-11-14
xo-advanced-systems.ltd1.nextcloud.comNot in the scope2026-11-14
yunex.ltd1.nextcloud.comNot in the scope2026-11-14
ziemannholvrieka.ltd1.nextcloud.comNot in the scope2026-11-14
zitsh.ltd1.nextcloud.comNot in the scope2026-11-14
zuumeo.ltd1.nextcloud.comNot in the scope2026-11-14
ltd2.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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