#VU45657 Open redirect in Ultimate Member - User Profile & Membership Plugin

Vulnerability identifier: #VU45657

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-601

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ultimate Member - User Profile & Membership Plugin
Web applications / Modules and components for CMS

Vendor: Ultimate Member

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data passed via the "redirect_to" GET parameter in the registration and login pages. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Ultimate Member - User Profile & Membership Plugin: 1.0.0 - 2.1.6

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External links
https://wpvulndb.com/vulnerabilities/10346/
https://github.com/ultimatemember/ultimatemember/commit/c466e3d3d014a7e12850467372bdbabe6c474db2
https://wordpress.org/support/topic/redirect_to-in-querystring-vulnerability/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.