Vulnerability in Nextcloud

CVE-2021-41166

The Nextcloud Android app is the Android client for Nextcloud, a self-hosted productivity platform. An issue in versions prior to 3.17.1 may lead to sensitive information disclosure. An unauthorized app that does not have the otherwise required `MANAGE_DOCUMENTS` permission may view image thumbnails for images it does not have permission to view. Version 3.17.1 contains a patch. There are no known workarounds.

EPSS: 0.009 (57.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-41166?
CVE-2021-41166 is a medium-severity vulnerability in Nextcloud, classified under Incorrect Default Permissions. CVSS score: 4.3/10. Published 2022-01-26.
How severe is CVE-2021-41166?
Medium severity. CVSS v3 base score is 4.3 out of 10.