What’s Vulnerable › Vulnerabilities

CVE-2021-41256: Intent URI permissions manipulation in nextcloud news-android

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-11-30 · updated 2026-06-17
• Weakness: CWE-829

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.

Affected products

• nextcloud news: before 0.9.9.63 — fixed in 0.9.9.63

How to fix

Upgrade to a fixed version: nextcloud news 0.9.9.63. Check the vendor advisory for mitigations.

References

• https://github.com/nextcloud/news-android/blob/master/security/GHSL-2021-1033_Nextcloud_News_for_Android.md
• https://github.com/nextcloud/news-android/commit/05449cb666059af7de2302df9d5c02997a23df85
• https://github.com/nextcloud/news-android/security/advisories/GHSA-2q9v-q3cc-h9f3
• https://github.com/nextcloud/news-android/blob/master/security/GHSL-2021-1033_Nextcloud_News_for_Android.md
• https://github.com/nextcloud/news-android/commit/05449cb666059af7de2302df9d5c02997a23df85
• https://github.com/nextcloud/news-android/security/advisories/GHSA-2q9v-q3cc-h9f3

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