Global infos:

An issue was discovered in the Ultimate Member plugin before 2.1.12 for WordPress, aka Unauthenticated Privilege Escalation via User Meta. An attacker could supply an array parameter for sensitive metadata, such as the wp_capabilities user meta that defines a user's role. During the registration process, submitted registration details were passed to the update_profile function, and any metadata was accepted, e.g., wp_capabilities[administrator] for Administrator access.

CVE Status: Modified

References:

[email protected]

[email protected]

[email protected]

af854a3a-2127-422b-91ae-364da2661108

af854a3a-2127-422b-91ae-364da2661108

af854a3a-2127-422b-91ae-364da2661108

Metrics:

Attribute	Value
Attack Complexity	LOW
Attack Vector	NETWORK
Availability Impact	HIGH
Base Score	10
Base Severity	CRITICAL
Confidentiality Impact	HIGH
Integrity Impact	HIGH
Privileges Required	NONE
Scope	CHANGED
User Interaction	NONE
Vector String	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploitability Score	3.9
Impact Score	6
Source	[email protected]
Type	Secondary

Links:

Exploit-db
Github