CVE-2021-41166

low-risk
Published 2022-01-26

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.

Do I need to act?

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0.23% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Nextcloud

References (8)

Patch https://github.com/nextcloud/android/commit/aa47197109970b8449c4e44601eba36e3481...
Patch https://github.com/nextcloud/android/commit/b6ecf515b38c2d82d32743f27236534f3e03...
Patch https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wrwg-j...
Permissions Required https://hackerone.com/reports/1358597
Patch https://github.com/nextcloud/android/commit/aa47197109970b8449c4e44601eba36e3481...
Patch https://github.com/nextcloud/android/commit/b6ecf515b38c2d82d32743f27236534f3e03...
Patch https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wrwg-j...
Permissions Required https://hackerone.com/reports/1358597
24
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal