CVE-2021-32694: Malicious Android application can crash the Nextcloud Android Client

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-06-17 · updated 2026-06-17
Weakness: CWE-248

Description

Nextcloud Android app is the Android client for Nextcloud. In versions prior to 3.15.1, a malicious application on the same device is possible to crash the Nextcloud Android Client due to an uncaught exception. The vulnerability is patched in version 3.15.1.

Affected products

com.nextcloud.client: before 3.15.1 — fixed in 3.15.1

How to fix

Upgrade to a fixed version: com.nextcloud.client 3.15.1. Check the vendor advisory for mitigations.

References

https://github.com/nextcloud/android/pull/7919
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h2gm-m374-99vc
https://hackerone.com/reports/859136
https://github.com/nextcloud/android/pull/7919
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h2gm-m374-99vc
https://hackerone.com/reports/859136

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