Critical severity · published Jan 4, 2021
CVE-2020-36157
An issue was discovered in the Ultimate Member plugin before 2.1.12 for WordPress, aka Unauthenticated Privilege Escalation via User Roles
9.8
CVSS
3%
EPSS
No
On KEV
Description
An issue was discovered in the Ultimate Member plugin before 2.1.12 for WordPress, aka Unauthenticated Privilege Escalation via User Roles. Due to the lack of filtering on the role parameter that could be supplied during the registration process, an attacker could supply the role parameter with a WordPress capability (or any custom Ultimate Member role) and effectively be granted those privileges.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.0% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UM
Ultimate Member · Ultimatemember
before 2.1.12 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36157
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-36157
Release Notes
https://wordpress.org/plugins/ultimate-member/#developers
Exploit
https://wpscan.com/vulnerability/33f059c5-58e5-44b9-bb27-793c3cedef3b
Exploit
https://www.wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-affect-100k-sites-using-ultimate-member-plugin/
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