CVE-2021-43860
flatpak: Permissions granted to applications can be hidden from the user at install time
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · January 12, 2022
Updated · November 22, 2025
Description
An incorrect authorization vulnerability was found in Flatpak. Flatpak does not properly validate that the permissions displayed to the user for an app at install time match the actual permissions granted to the app at runtime in the case that there's a null byte in the metadata file of an app. This issue allows apps to grant themselves permissions without the user's consent.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 8.2CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CWE-276 · Incorrect Default Permissions