CVE-2020-36155
10.0
CRITICAL · CVSS 3.1 · EPSS 8.5% (pctl 95)
In your normal cycle
Critical by CVSS (10), but no sign of active exploitation.
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.
Scoring
| CVSS | 10.0 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 8.46% — more likely to be exploited than 95% of all CVEs |
| Weakness | CWE-269 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-01-04 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| ultimatemember | ultimate member |
References
- https://wordpress.org/plugins/ultimate-member/#developers
- https://wpscan.com/vulnerability/cf13b0f8-5815-4d27-a276-5eff8985fc0b
- https://www.wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-affect-100k-sites-using-ultimate-member-plugin/
- https://wordpress.org/plugins/ultimate-member/#developers
- https://wpscan.com/vulnerability/cf13b0f8-5815-4d27-a276-5eff8985fc0b
- https://www.wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-affect-100k-sites-using-ultimate-member-plugin/
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