Icecast before 2.4.1 transmits the output of the on-connect script, which might allow remote attackers to obtain sensitive information, related to shared file descriptors.
IceCast 2.20 allows remote attackers to bypass the XSL parser and obtain the source for XSL files via a request for a .xsl file with a trailing . (dot).
Directory traversal vulnerability in Icecast 1.3.10 and earlier allows remote attackers to read arbitrary files via a modified .. (dot dot) attack using encoded URL characters.