Stored XSS on Share-popup of a directory's Gallery-view
Unknown
Vulnerability Details
Hi,
Nice with the program launch! Congrats!
I noticed that there was a Share-icon when toggling to the Gallery-view of a directory under "Nextcloud Files":
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If your directory has a malicious name such as a HTML-payload: `<img src=x onerror=alert(1)>`, this HTML will run when clicking on the Share-icon:
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I see that you have a proper CSP in place, but remember that Internet Explorer is not there yet:
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Also, since any user could create files, a user could potentially execute this for an admin (if that admin is not using a CSP-supported browser that is).
Let me know if you need more information.
Regards,
Frans
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- Report ID: 145355
- State: Closed
- Substate: resolved
- Upvotes: 22