CVE-2020-36157
CVE-2020-36157 is a critical-severity vulnerability in Ultimatemember Ultimate Member with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Critical (CVSS 3.x base score 10.0)
- CVSS v2: 7.5
- EPSS exploit prediction: 3% (86th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Ultimatemember Ultimate Member
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2020-36157?
- CVE-2020-36157 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-36157 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-36157?
- CVE-2020-36157 affects Ultimatemember Ultimate Member. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-36157?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-36157 published?
- CVE-2020-36157 was published on 2021-01-04 and last updated on 2026-06-17.
References
- https://wordpress.org/plugins/ultimate-member/#developers
- https://wpscan.com/vulnerability/33f059c5-58e5-44b9-bb27-793c3cedef3b
- https://www.wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-affect-100k-sites-using-ultimate-member-plugin/
Affected products (1)
- cpe:2.3:a:ultimatemember:ultimate_member:*:*:*:*:*:wordpress:*:*
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