CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
What the vulnerability does
The Simple Local Avatars plugin for WordPress is vulnerable to unauthorized modification of data in version 2.8.4. This is due to a missing capability check on the migrate_from_wp_user_avatar() function. This makes it possible for authenticated attackers, with subscriber-level access and above, to migrate avatar metadata for all users.
Explanation of Vulnerability in Simple Terms
Simple Local Avatars through version 2.8.4 does not properly check permissions before allowing users to modify avatar data. A logged-in user with low privileges can change avatars for other users or accounts they should not have access to. The vulnerability requires an active WordPress user account but no special role or capability.
What an attacker can do
Modify avatar images for other user accounts without authorization.
Potential impact on your site
Users' profile avatars can be changed by unauthorized accounts, potentially causing impersonation or defacement.
Conditions required to exploit
Attacker must have a valid WordPress user account with low privileges (e.g., subscriber or contributor role).
Key dates
External resources
