Reflected XSS in redirect of the Updater (NC-SA-2020-007)
26th March 2019
Risk level: Low
CVSS v3 Base Score: 2 (AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N)
HackerOne report: 515484
Missing escaping of HTML in the Updater of Nextcloud 15.0.5 allowed a reflected XSS when starting the updater from a malicious location.
- Nextcloud Server < 15.0.6 (CVE-2019-15618)
- Nextcloud Server < 14.0.9 (CVE-2019-15618)
The error has been fixed.
It is recommended that the Nextcloud Server is upgraded to 15.0.6.
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory:
- Nikita Tikhomirov - Pentest Generation (email@example.com) - Vulnerability discovery and disclosure.
This advisory is licensed CC BY-SA 4.0.