Event details leaked when sharing a non-public calendar event (NC-SA-2020-013)
15th November 2018
Risk level: Low
CVSS v3 Base Score: 4.8 (AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N)
HackerOne report: 439828
Improper preservation of permissions in Nextcloud Server 14.0.3 causes the event details to be leaked when sharing a non-public event.
- Nextcloud Server < 14.0.4 (CVE-2020-8117)
- Nextcloud Server < 13.0.8 (CVE-2020-8117)
- Nextcloud Server < 12.0.13 (CVE-2020-8117)
The error has been fixed.
It is recommended that the Nextcloud Server is upgraded to 14.0.4.
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory:
- NA - Vulnerability discovery and disclosure.
This advisory is licensed CC BY-SA 4.0.