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Bug bounty reports15,219

Publicly disclosed HackerOne reports, with the platform's own outcome and severity.

Program:Nextcloud
Status
Severity
Weakness:Information Disclosure
Clear
Year
Bounty paid14
Access stated
Access needed
  • No account0
  • A user account1
  • A privileged role0
  • Admin0
  • Physical or local access0
  • Not clear from the report0
Technique
Clear filters89 of 15,219 reports
Disclosed bug bounty reports
ReportStatusWeaknessSeverityDisclosedBountyVotes
Username Enumeration#667613InformativeInformation Disclosure–2019-11-11––
Directory Listing In Subdomain Of nextcloud.com#218199InformativeInformation Disclosure–2017-07-14–1
Information Exposure Through Directory Listing - https://apps.nextcloud.com/static/#403909DuplicateInformation Disclosure–2019-01-07–1
Leaking sensitive information through JSON file path.#1211061InformativeInformation Disclosure–2022-02-07–1
Deny access to download.nextcloud.com + folders#146314InformativeInformation Disclosure–2016-06-21–2
Share tokens for public calendars disclosed (NC-SA-2017-011)#218876ValidInformation Disclosure–2017-06-06–2
information disclose#223759InformativeInformation Disclosure–2017-04-25–2
External Storage - WebDAV - New user has access to storage from deleted user (same user-ID)#549831ValidInformation Disclosure–2021-02-14–2
WordPress Plugin Insert or Embed Articulate Content into WordPress Remote Code Execution (UNAUTHORIZED)#696198InformativeInformation Disclosure–2019-11-11–2
https://newsletter.nextcloud.com Directory listening and Information Disclosure#145603ValidInformation Disclosure–2016-06-18–3
Retrieval and alteration of exposed media on Android Oreo#462441InformativeInformation Disclosure–2019-06-26–3
Password authentication at newsletter.nextcloud.com discloses username list#476439ValidInformation Disclosure–2020-03-01–3
Veracode and security audit record are publicly available#669365InformativeInformation Disclosure–2019-09-10–3
Contacts menu (not app) fails to restrict (to local groups) for contacts from federated servers#895730ValidInformation Disclosure–2020-07-25–3
Nextcloud update checks leaks information#1173411InformativeInformation Disclosure–2021-05-01–3
Information Exposure Through Directory Listing vulnerability#1476709InformativeInformation Disclosure–2022-02-11–3
Enumeration of subscribed users and unauthenticated email unsubscriptions on https://newsletter.nextcloud.com/?p=unsubscribe#145396ValidInformation Disclosure–2016-06-19–4
nextcloud.com: Directory listening for 'wp-includes' forders#145495ValidInformation Disclosure–2016-06-17–4
WordPress Vulnerabilities: User Enumeration, Vulnerable Akismet Plugin, XML-RPC Interface available#146093InformativeInformation Disclosure–2016-06-22–4
Information disclosure#152499N/AInformation Disclosure–2017-04-20–4
Information Exposure Through Directory Listing#260221InformativeInformation Disclosure–2018-05-17–4
Banner Grabbing - Apache Server Version Disclosure#348801InformativeInformation Disclosure–2018-05-17–4
Disclosed Version of PORTS SSH|HTTP|SSL#358102DuplicateInformation Disclosure–2018-06-14–4
Full path disclosure vulnerability via Upload .htaccess file#919429InformativeInformation Disclosure–2020-07-09–4
Brute force protections don't work#1596918ValidInformation Disclosure–2022-09-03–4
Vulnerable Javascript library#145517InformativeInformation Disclosure–2016-06-17–5
Email ID Disclosure.#146106InformativeInformation Disclosure–2016-06-20–5
Information Disclosure of .htaccess file in Private Server/Subdomain#163106ValidInformation Disclosure–2016-08-26–5
Shared file link - password protection bypass under certain conditions#231917ValidInformation Disclosure–2018-09-25$505
Unauthenticated 'display name' information leak on enumeration of login names#237232ValidInformation Disclosure–2020-03-01–5
Banner Grabbing - Apache Server Version Disclousure#269449InformativeInformation Disclosure–2018-05-17–5
Anonymous file drop page ignores user profile visibility restrictions#752353ValidInformation Disclosure–2020-08-03–5
the complete server installation path is visible in cloud/user endpoint#1690510ValidInformation Disclosure–2023-03-30–5
Directory listening enabled in: 88.198.160.130#156510ValidInformation Disclosure–2016-09-04–6
Wordpress Version Disclosure Bug On Nextcloud#188132InformativeInformation Disclosure–2016-12-04–6
SQL exception in JSON format#225098ValidInformation Disclosure–2020-01-31–6
Text app leaks file path of shared files#1246721ValidInformation Disclosure–2021-08-11–6
Error in Deleting Deck cards attachment reveals the full path of the website#1354334ValidInformation Disclosure–2022-05-20–6
Wordpress: Directory Traversal / Denial of Serivce#163421ValidInformation Disclosure–2016-08-26–7
Calendar and addressbook names disclosed (NC-SA-2017-012)#203594ValidInformation Disclosure–2017-05-08$1837
Android content provider exposes password-protected share password hashes#242727ValidInformation Disclosure–2020-01-31$757
Private/confidential setting of calendar events is ignored on activity stream#476615ValidInformation Disclosure–2019-06-27–7
User Information Disclosure via REST API#197877ValidInformation Disclosure–2017-02-11–8
Wordpress Users Disclosure#625199DuplicateInformation Disclosure–2019-07-01–8
Directory listing is enabled that exposes non public data through multiple path#690796ValidInformation Disclosure–2020-02-01–8
Information disclosure via Desktop client when attempting to lock a file inside a end-to-end encrypted directory#3159877ValidInformation DisclosureNone2026-01-04–8
help.nextcloud Email Address/Username enumeration#145734InformativeInformation Disclosure–2016-06-19–9
Files Drop: WebDAV endpoint is leaking existence of resources#187460ValidInformation Disclosure–2017-01-01–9
User files is disclosed when someone called while the screen is locked#1338781ValidInformation Disclosure–2022-03-14–9
Moderator can enable cam/mic remotely if cam/mic-permission was disabled while user has activated cam/mic#1520685ValidInformation Disclosure–2022-06-09$1009

Status and severity are HackerOne's. “Access stated” is what the title says; “Access needed” and techniques come from CyberSIXT's analysis of the public report (549 analysed so far), which can be wrong. Data as of 2026-11-14.

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