Cross-site scripting (XSS) vulnerability in the mod_pagespeed module 0.x, 1.0.22.7, 1.1.x, 1.24.1, 1.3.25.1 through 1.3.25.4, 1.4.26.1 through 1.4.26.4, 1.5.27.1 through 1.5.27.3, and 1.6.29.1 through 1.6.29.6 for the Apache HTTP Server allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.