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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
Year:2016
Clear
Bounty paid3
Access stated
Access needed
  • No account0
  • A user account0
  • A privileged role0
  • Admin0
  • Physical or local access0
  • Not clear from the report0
Clear filters69 of 15,219 reports
Disclosed bug bounty reports
ReportStatusWeaknessSeverityDisclosedBountyVotes
[Nextcloud 9.0.53] Content Spoofing in 'trustDomain' parameter#153251ValidMisconfiguration and Insecure Design–2016-12-05–1
demo.nextcloud.com: Content spoofing due to default Apache Error Page#156425ValidMisconfiguration and Insecure Design–2016-08-30–1
Content Injection - demo.nextcloud.com#161323ValidMisconfiguration and Insecure Design–2016-08-26–1
Slow Http attack on nextcloud(DOS)#163823ValidDenial of Service–2016-10-05–1
xss on demo.nextcloud.com due to outdated version#177713ValidCross-site Scripting–2016-11-26–1
help.nextcloud.com: Session Management Issue#145430InformativeNo weakness recorded–2016-06-17–2
Nextcloud server software: Content Spoofing#145463ValidMisconfiguration and Insecure Design–2016-07-19–2
Directory Listing On download.nextcloud.com & Practical Attacks on PGP (Pretty Good Privacy)#145552InformativeCryptography–2016-06-17–2
Lost Password CSRF#145583InformativeCross-Site Request Forgery–2016-06-19–2
Content Injection 404 page#145849ValidMisconfiguration and Insecure Design–2016-06-19–2
Content Injection in subdomain#145854ValidMisconfiguration and Insecure Design–2016-06-19–2
Deny access to download.nextcloud.com + folders#146314InformativeInformation Disclosure–2016-06-21–2
Content spoofing in cloud.nextcloud.com#152925ValidMisconfiguration and Insecure Design–2016-08-30–2
Arbitrary File Upload in Logo & Log in image Theming setting.#155690ValidCross-site Scripting–2016-10-05–2
Content Injection - apps.nextcloud.com#161299ValidMisconfiguration and Insecure Design–2016-08-26–2
Reflected Self-XSS Vulnerability in the Comment section of Files (Different-payloads)#164520DuplicateCross-site Scripting–2016-08-31–2
BruteForce in to Admin Account#188205InformativeAuthentication–2016-12-04–2
Content Spoofing#145374ValidMisconfiguration and Insecure Design–2016-06-19–3
No permission set on Activities [Android App]#145402InformativeAuthentication–2016-06-20–3
No rate limiting on password protected shared file link#145462DuplicateAuthentication–2016-06-20–3
https://newsletter.nextcloud.com Directory listening and Information Disclosure#145603ValidInformation Disclosure–2016-06-18–3
No captcha on newsletter.nextcloudcom leaves vulnerable to email spammers#145612ValidMisconfiguration and Insecure Design–2016-06-19–3
Bruteforce attack is possible on newsletter.nextcloud.com#145722InformativeAuthentication–2016-06-19–3
Content Spoofing/Text Injection - docs.nextcloud.org#145850ValidMisconfiguration and Insecure Design–2016-06-19–3
Content injection in subdomain#145853ValidMisconfiguration and Insecure Design–2016-06-19–3
The application uses basic authentication.#151847InformativeAuthentication–2016-07-18–3
demo.nextcloud.com: Content spoofing due to default Apache Error Page#155189ValidMisconfiguration and Insecure Design–2016-09-29–3
Reflected Self-XSS Vulnerability in the Comment section of Files Information#164027ValidCross-site Scripting–2016-08-30$1003
Login Hints on Admin Panel#188195InformativeMisconfiguration and Insecure Design–2016-12-05–3
stats.nextcloud.com: Content Injection#145375ValidMisconfiguration and Insecure Design–2016-07-17–4
Enumeration of subscribed users and unauthenticated email unsubscriptions on https://newsletter.nextcloud.com/?p=unsubscribe#145396ValidInformation Disclosure–2016-06-19–4
help.nextcloud.com: Known DoS condition (null pointer deref) in Nginx running#145409ValidDenial of Service–2016-07-27–4
nextcloud.com: Mail Bombing ( No Rate Limiting On Sending Emails On Contact us Page)#145458ValidMemory Corruption–2016-07-17–4
nextcloud.com: Directory listening for 'wp-includes' forders#145495ValidInformation Disclosure–2016-06-17–4
newsletter.nextcloud.com: Bypass firewall protection#145730ValidAuthentication–2016-07-18–4
WordPress Vulnerabilities: User Enumeration, Vulnerable Akismet Plugin, XML-RPC Interface available#146093InformativeInformation Disclosure–2016-06-22–4
REG: Content provider information leakage#146179InformativeCommand and Code Injection–2016-06-24–4
[Thirdparty] Stored XSS in chat module - nextcloud server 9.0.51 installed in ubuntu 14.0.4 LTS#148897ValidCross-site Scripting–2016-11-02–4
Bookmarks: Delete all existing bookmarks of a user#154529ValidAccess Control–2016-08-08–4
Content spoofing due to the improper behavior of the 403 page in Private Server#177335ValidMisconfiguration and Insecure Design–2016-10-31–4
Stored XSS on new Calling plugin (spreed)#190870ValidCross-site Scripting–2016-12-13–4
nextcloud.com: Content Injection Custom 404 Error#145344ValidMisconfiguration and Insecure Design–2016-06-17–5
Vulnerable Javascript library#145517InformativeInformation Disclosure–2016-06-17–5
Business/Functional logic bypass: Remove admins from admin group.#145745InformativeAccess Control–2016-06-19–5
Email ID Disclosure.#146106InformativeInformation Disclosure–2016-06-20–5
More content spoofing through dir param in the files app#154827ValidMisconfiguration and Insecure Design–2016-11-04$505
Information Disclosure of .htaccess file in Private Server/Subdomain#163106ValidInformation Disclosure–2016-08-26–5
Share owner has no possibility to list all existing derived shares#145452ValidAuthentication–2016-12-13–6
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

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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