Vulnerability · Published Jan 4, 2021 · Assigned by mitre
CVE-2020-36155
Critical 10.0
In plain English
A critical-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 9.8% (higher than 96% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei.
Official description
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.
Affected products (as reported)
References
- https://wordpress.org/plugins/ultimate-member/#developers x_refsource_MISC
- https://www.wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-affect-100k-sites-using-ultimate-member-plugin/ x_refsource_MISC
- https://wpscan.com/vulnerability/cf13b0f8-5815-4d27-a276-5eff8985fc0b x_refsource_MISC