The Javascript method Sling.evalString() in Apache Sling Servlets Post before 2.3.22 uses the javascript ‘eval’ function to parse input strings, which allows for XSS attacks by passing specially crafted input strings.
packetstormsecurity.com/files/143758/Apache-Sling-Servlets-Post-2.3.20-Cross-Site-Scripting.html
www.securityfocus.com/archive/1/541024/100/0/threaded
www.securityfocus.com/bid/100284
issues.apache.org/jira/browse/SLING-7041
lists.apache.org/thread.html/2f4b8333e44c6e7e0b00933bd4204ce64829952f60dbb6814f2cdf91%40%3Cdev.sling.apache.org%3E