Description

WordPress 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 versions 4.3.x ranging from 4.3 and up to (and including) 4.3.3 are vulnerable.

Remediation

Update to WordPress version 4.3.4 or latest

References

https://gist.github.com/cure53/df34ea68c26441f3ae98f821ba1feb9c

https://www.seebug.org/vuldb/ssvid-91515

https://midzer0.github.io/2016/wordpress-4.5.1-xss/

http://codex.wordpress.org/Version_4.3.4

http://www.openwall.com/lists/oss-security/2016/05/07/7

Related Vulnerabilities

WordPress Plugin S3 Video Cross-Site Scripting (0.983)

Serendipity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2019-11870)

WordPress Plugin Paid Memberships Pro-Restrict Member Access to Content, Courses, Communities-Free or Paid Subscriptions 'memberslist-csv.php' Information Disclosure (1.4.9)

WordPress Plugin Feed Them Social-for Twitter feed, Youtube and more Cross-Site Scripting (2.5.2.1)

Jenkins Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-0791)

Severity

High

Classification

CVE-2016-4567 CWE-79 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Tags

Missing Update XSS