Privilege escalation in Ultimatemember Ultimate Member
CVE-2020-36155
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.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.085 (94.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.090 · newest: 0.085 · change: -0.005
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wordpress.org/plugins/ultimate-member/ (Third Party Advisory, Release Notes)
- www.wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-af… (Exploit, Third Party Advisory)
- wpscan.com/vulnerability/cf13b0f8-5815-4d27-a276-5eff8985fc0b (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-36155?
- CVE-2020-36155 is a critical-severity vulnerability in Ultimatemember Ultimate Member, classified under Improper Privilege Management. CVSS score: 10.0/10. Published 2021-01-04.
- How severe is CVE-2020-36155?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2020-36155 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.