#VU56367 Authorization bypass through user-controlled key in Nextcloud Circles - CVE-2021-37630
Published: September 7, 2021
Vulnerability identifier: #VU56367
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-37630
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Nextcloud Circles
Nextcloud Circles
Software vendor:
Nextcloud
Nextcloud
Description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the Secret Circle can be joined without approval. A remote authenticated attacker can join any Secret Circle without approval by the Circle owner.
Remediation
Install updates from vendor's website.