High severity7.5NVD Advisory· Published Jan 25, 2022· Updated Jun 17, 2026
CVE-2021-43863
CVE-2021-43863
Description
The Nextcloud Android app is the Android client for Nextcloud, a self-hosted productivity platform. The Nextcloud Android app uses content providers to manage its data. Prior to version 3.18.1, the providers FileContentProvider and DiskLruImageCacheFileProvider have security issues (an SQL injection, and an insufficient permission control, respectively) that allow malicious apps in the same device to access Nextcloud's data bypassing the permission control system. Users should upgrade to version 3.18.1 to receive a patch. There are no known workarounds aside from upgrading.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- Range: <3.18.1
- Range: < 3.18.1
Patches
Vulnerability mechanics
References
3- github.com/nextcloud/android/commit/627caba60e69e223b0fc89c4cb18eaa76a95db95nvdPatchThird Party Advisory
- github.com/nextcloud/android/security/advisories/GHSA-vjp2-f63v-w479nvdThird Party Advisory
- hackerone.com/reports/1358597nvdPermissions Required
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