CVE-2022-24885: Improper Authentication in Nextcloud Android Files

Severity: low (CVSS 2.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-04-27 · updated 2026-06-17
Weakness: CWE-287

Description

Nextcloud Android app is the Android client for Nextcloud, a self-hosted productivity platform. Prior to version 3.19.1, users can bypass a lock on the Nextcloud app on an Android device by repeatedly reopening the app. Version 3.19.1 contains a fix for the problem. There are currently no known workarounds.

Affected products

com.nextcloud.client: before 3.19.1 — fixed in 3.19.1

How to fix

Upgrade to a fixed version: com.nextcloud.client 3.19.1. Check the vendor advisory for mitigations.

References

https://github.com/nextcloud/android/pull/9816
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-32j4-9xf3-h2mg
https://hackerone.com/reports/1450368
https://github.com/nextcloud/android/pull/9816
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-32j4-9xf3-h2mg
https://hackerone.com/reports/1450368

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