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. 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 v3.1 NVD

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 MITRE

10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0 NVD

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

3.00% chance of exploitation in the next 30 days, 87th percentile

Published

2021-01-04

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/33f059c5-58e5-44b9-bb27-793c3cedef3b

Security advisories

• https://wordpress.org/plugins/ultimate-member/#developers
• https://www.wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-affe…

References

• CVE Record
• NVD entry