Stored XSS in autocomplete suggestions for file comments (NC-SA-2018-008)
10th August 2018
Risk level: Low
CVSS v3 Base Score: 0 (AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:N)
A missing sanitization of search results for an autocomplete field could lead to a stored XSS requiring user-interaction. The missing sanitization only affected user names, hence malicious search results could only be crafted by authenticated users.
- Nextcloud Server < 13.0.5 (CVE-2018-3780)
The error has been fixed.
It is recommended that all instances are upgraded to Nextcloud 13.0.5.
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory:
- Joas Schilling - Nextcloud GmbH (firstname.lastname@example.org) - Vulnerability discovery and disclosure.
This advisory is licensed CC BY-SA 4.0.