Nextcloud · disclosed reports
Information Disclosure
8 disclosed reports · $250 paid · 8 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
- 8
- valid
- 8
- paid a bounty
- 2
Every one of the 8 is a mark on the map. Named now: 1 to 8, most upvoted first.
- Directory Listing of publicly available assets
- SVG filter primitives bypass remote image blocking, enabling email tracking without consent.
- Roundcube Webmail Style Sanitizer can be bypassed using CSS Character Escapes
- Unauthenticated testing endpoint of notify_push expose internal IP
- Possible to enumerate valid files in password protected shares/files drop shares as well as spam folder with files
- Bypass of privacy filter / tracking pixel blocker
- Exposed Log File Lead to Full Internal path disclosure at [https://nextcloud.com/wp-content/debug.log]
- Android - Possible to intercept broadcasts about uploaded files
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.