CVE-2021-37630

Secret Circle can be joined without approval in Nextcloud Circles

Description

Nextcloud Circles is an open source social network built for the nextcloud ecosystem. In affected versions the Nextcloud Circles application allowed any user to join any "Secret Circle" without approval by the Circle owner leaking private information. It is recommended that Nextcloud Circles is upgraded to 0.19.15, 0.20.11 or 0.21.4. There are no workarounds for this issue.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.33%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory hackerone.com
Affected: nextcloud security-advisories
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-56j9-3rj4-wvgm third party advisory
https://github.com/nextcloud/circles/pull/768 third party advisory patch
https://hackerone.com/reports/1257624 third party advisory permissions required

Frequently Asked Questions

What is the severity of CVE-2021-37630?
CVE-2021-37630 has been scored as a medium severity vulnerability.
How to fix CVE-2021-37630?
To fix CVE-2021-37630, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-37630 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-37630 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-37630?
CVE-2021-37630 affects nextcloud security-advisories.
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