Description

WordPress Plugin Relevant-Related Posts by BestWebSoft is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. WordPress Plugin Relevant-Related Posts by BestWebSoft version 1.1.9 is vulnerable; prior versions may also be affected.

Remediation

Update to plugin version 1.2.0 or latest

References

http://www.defensecode.com/advisories/DC-2017-02-014_50_WordPress_plugins_by_BestWebSoft_Advisory.pdf

https://packetstormsecurity.com/files/142118/WordPress-BestWebSoft-XSS-CSRF.html

https://wordpress.org/plugins/relevant/#changelog

http://jvn.jp/en/jp/JVN24834813/index.html

Related Vulnerabilities

Python Improper Input Validation Vulnerability (CVE-2013-4238)

Liferay Portal Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2021-38269)

WordPress Plugin WP-SpamFree Anti-Spam Cross-Site Scripting (2.1.1.6)

WordPress Plugin WordPress Backup and Migrate-Backup Guard Cross-Site Scripting (1.1.46)

WordPress Improper Control of Generation of Code ('Code Injection') Vulnerability (CVE-2009-3890)

Severity

High

Classification

CVE-2017-2171 CWE-79 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Tags

Missing Update XSS