Incomplete blacklist vulnerability in the urlEncode function in lib/TWiki.pm in TWiki 6.0.0 and 6.0.1 allows remote attackers to conduct cross-site scripting (XSS) attacks via a "'" (single quote) in the scope parameter to do/view/TWiki/WebSearch.
Multiple cross-site scripting (XSS) vulnerabilities in TWiki 6.0.1 allow remote attackers to inject arbitrary web script or HTML via the (1) QUERYSTRING variable in lib/TWiki.pm or (2) QUERYPARAMSTRING variable in lib/TWiki/UI/View.pm, as demonstrated by the QUERY_STRING to do/view/Main/TWikiPreferences.