Nextcloud · disclosed reports
Access Control
10 disclosed reports · $2,150 paid · 10 valid
Every dot is a report; the named ones are the most upvoted. Bright dots were paid a bounty. A report opens its page here: our analysis where there is one, and the link to HackerOne. The status is HackerOne's own outcome; "access needed" is only what a title states.
Open Nextcloud on HackerOne- reports
- 10
- valid
- 10
- paid a bounty
- 5
Every one of the 10 is a mark on the map. Named now: 1 to 10, most upvoted first.
- User can copy locked folders and gain access to the contents
- Blind SSRF Vulnerability in Appstore Release Upload Form
- Can reshare read&share only folder with more permissions
- Nextcloud mail does not respect download permissions in shares
- Re-emergence of Security Vulnerability in Nextcloud Version 28 Previously Fixed in 25.0.4
- Full Passcode bypass on Nextcloud App iOS
- Users can modify tags on files that do not belong to them
- Missing permission check when removing a photo from an album
- see card comments after remove shared board
- Users can set up workflows using restricted and invisible system tags
paid a bounty
Zoom in on the map and the dots under the middle of it are named where they are.
Data as of 2026-11-15. CVE List through 2026-11-15 · EPSS of 2026-11-15 · CISA KEV checked 2026-11-15. Sources: the CVE List, CISA KEV, EPSS, NVD, nuclei templates and public bug bounty data.