#VU67061 Stored cross-site scripting in WP-UserOnline - CVE-2022-2473

Vulnerability identifier: #VU67061

Vulnerability risk: Low

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

CVE-ID: CVE-2022-2473

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WP-UserOnline
Web applications / Modules and components for CMS

Vendor: Lester 'GaMerZ' Chan

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the "templates[browsingpage]" parameter. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WP-UserOnline: 1.00 - 2.87.6

---

External links
https://www.exploitalert.com/view-details.html?id=38893
https://packetstormsecurity.com/files/167864/wpuseronline2876-xss.txt
https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2473
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2758412%40wp-useronline&new=2758412%40wp-useronline&sfp_email=&sfph_mail=

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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