DOM XSS vulnerability in search dialogue (NC-SA-2017-007)
8th May 2017
Risk level: Low
CVSS v3 Base Score: 2.6 (AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N)
HackerOne report: 213227
Inadequate escaping lead to XSS vulnerability in the search module. To be exploitable an user has to write or paste malicious content into the search dialogue.
- Nextcloud Server < 11.0.3 (CVE-2017-0890)
The content is now properly escaped, furthermore for Nextcloud 12 we have hardened jQuery to prevent such CSP bypasses.
It is recommended that all instances are upgraded to Nextcloud 11.0.3.
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory:
- Ahsan Khan - Vulnerability discovery and disclosure.
This advisory is licensed CC BY-SA 4.0.