Removing emails from circles does not revoke access to shared items (NC-SA-2019-013)
6th October 2019
Risk level: Low
CVSS v3 Base Score: 2 (AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N)
HackerOne report: 673724
Improper authorization in the Circles app 0.17.7 causes retaining access when an email address was removed from a circle.
- Nextcloud Circles < 0.17.8 (CVE-2019-15610)
- Nextcloud Circles < 0.16.11 (CVE-2019-15610)
The error has been fixed.
It is recommended that the Circles app is upgraded to 0.17.8.
The Nextcloud team thanks the following people for their research and responsible disclosure of the above advisory:
- michag86 - Vulnerability discovery and disclosure.
This advisory is licensed CC BY-SA 4.0.