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Nextcloud

Open on HackerOneAtlas
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

Root
Scope
Name suggests
First seen
Text file1,642 names
Subdomains of Nextcloud
NameScopeFirst seen
server.nextcloud.comNot in the scope2026-11-14
services.nextcloud.comNot in the scope2026-11-14
collabora.services.nextcloud.comNot in the scope2026-11-14
eo.services.nextcloud.comNot in the scope2026-11-14
eo-staging.services.nextcloud.comstagingNot in the scope2026-11-14
fts.services.nextcloud.comNot in the scope2026-11-14
hpb.services.nextcloud.comNot in the scope2026-11-14
onlyoffice.services.nextcloud.comNot in the scope2026-11-14
thinkfree.services.nextcloud.comNot in the scope2026-11-14
turn.services.nextcloud.comNot in the scope2026-11-14
windmill.services.nextcloud.comNot in the scope2026-11-14
share.nextcloud.comNot in the scope2026-11-14
spreed-demo.nextcloud.comtestNot in the scope2026-11-14
staging.nextcloud.comstagingNot in the scope2026-11-14
static-sites.nextcloud.comNot in the scope2026-11-14
stats.nextcloud.comIn scope2026-11-14
status.nextcloud.commonitoringNot in the scope2026-11-14
stun.nextcloud.comNot in the scope2026-11-14
stund.nextcloud.comNot in the scope2026-11-14
subscriptions.nextcloud.comNot in the scope2026-11-14
support.nextcloud.comIn scope2026-11-14
surveyserver.nextcloud.comIn scope2026-11-14
tech-preview.nextcloud.comstagingNot in the scope2026-11-14
whiteboard.tech-preview.nextcloud.comstagingNot in the scope2026-11-14
testing.nextcloud.comtestNot in the scope2026-11-14
push.testing.nextcloud.comtestNot in the scope2026-11-14
transifex-sync.nextcloud.comNot in the scope2026-11-14
try.nextcloud.comListed out of scope2026-11-14
turn.nextcloud.comNot in the scope2026-11-14
turn-server.nextcloud.comNot in the scope2026-11-14
turn1.nextcloud.comNot in the scope2026-11-14
turn2.nextcloud.comNot in the scope2026-11-14
u003ewww.nextcloud.comNot in the scope2026-11-14
updates.nextcloud.comIn scope2026-11-14
vault.nextcloud.comtoolsNot in the scope2026-11-14
vinfall.nextcloud.comNot in the scope2026-11-14
vpn.nextcloud.comvpnNot in the scope2026-11-14
web2.nextcloud.comNot in the scope2026-11-14
www.nextcloud.comNot in the scope2026-11-14
www2.nextcloud.comNot in the scope2026-11-14
xmpp.nextcloud.comNot in the scope2026-11-14
zitsh.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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