MediaElement Vulnerable to Reflected XSS
Date: 2022-05
Affected: composer/contao/core, composer/contao-components/mediaelement, npm/mediaelement
Attack vector: xss
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2016-4567
CWE: CWE-79
CVSS: 6.1 (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

Cross-site scripting (XSS) vulnerability in flash/FlashMediaElement.swf in MediaElement.js before 2.21.0, as used in WordPress before 4.5.2, allows remote attackers to inject arbitrary web script or HTML via an obfuscated form of the jsinitfunction parameter, as demonstrated by "jsinitfunctio%gn."


Mitigations:

Architectural layers (MAESTRO):