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CVE-2021-29971

nvd nist
Published: Aug 5, 2021Modified: Jun 17, 2026

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9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 5.9
Source: NVD

Description

If a user had granted a permission to a webpage and saved that grant, any webpage running on the same host - irrespective of scheme or port - would be granted that permission. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 90.

Affected (1)

Products: Mozilla: Firefox
Mozilla
1 product
Firefox
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Firefox
Before 90.0

Related CWEs

CWE-281
Improper Preservation of Permissions
The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.

References (4)

Source: security@mozilla.org
Issue TrackingPermissions Required
Source: security@mozilla.org
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingPermissions Required
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

Timeline

No history available yet.