CVE-2021-41256

Public Exploit
Intent URI permissions manipulation in nextcloud news-android

Description

nextcloud news-android is an Android client for the Nextcloud news/feed reader app. In affected versions the Nextcloud News for Android app has a security issue by which a malicious application installed on the same device can send it an arbitrary Intent that gets reflected back, unintentionally giving read and write access to non-exported Content Providers in Nextcloud News for Android. Users should upgrade to version 0.9.9.63 or higher as soon as possible.

Category

5.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.24%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: nextcloud news-android
Published at:
Updated at:

References

Link Tags
https://github.com/nextcloud/news-android/security/advisories/GHSA-2q9v-q3cc-h9f3 third party advisory patch
https://github.com/nextcloud/news-android/commit/05449cb666059af7de2302df9d5c02997a23df85 third party advisory patch
https://github.com/nextcloud/news-android/blob/master/security/GHSL-2021-1033_Nextcloud_News_for_Android.md third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-41256?
CVE-2021-41256 has been scored as a medium severity vulnerability.
How to fix CVE-2021-41256?
To fix CVE-2021-41256, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-41256 being actively exploited in the wild?
It is possible that CVE-2021-41256 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-41256?
CVE-2021-41256 affects nextcloud news-android.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.