Quick answers
- Is CVE-2020-37169 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2020-37169 being exploited in the wild.
- How severe is CVE-2020-37169?
- Medium severity, with a CVSS score of 5.5, published 13 May 2026.
- Which products and versions are affected?
- Ultimate Member 2.1.3.
- Is there a fix for CVE-2020-37169?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2020-37169 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2020-37169?
- Check whether you run Ultimate Member at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A Local File Inclusion (LFI) vulnerability exists in the Ultimate Member plugin for WordPress, specifically within the 'class-admin-upgrade.php' file. The root cause is improper sanitization of the 'pack' parameter in POST requests, which is directly concatenated into an 'include_once' statement. An authenticated attacker can manipulate this parameter to traverse directories and include unintended PHP files from the server's packages directory. Successful exploitation can lead to arbitrary code execution or sensitive information disclosure. The vulnerability is confirmed in version 2.1.3.
Affected products
- Ultimate Member Ultimate Member 2.1.3
Timeline
- 2020-02-11: disclosed: Initial discovery by researcher
- 2020-02-13: other: Exploit published on Exploit-DB
- 2026-05-13: advisory: NVD/VulnCheck advisory published