Insufficient input validation and sanitation in Weblog Category name, Website About and File Upload features in all versions of Apache Roller on all platforms allows an authenticated user to perform an XSS attack. Mitigation: if you do not have Roller configured for untrusted users, then you need to do nothing because you trust your users to author raw HTML and other web content. If you are running with untrusted users then you should upgrade to Roller 6.1.2 and you should disable Roller's File Upload feature. 

User controlled `request.getHeader("Referer")`, `request.getRequestURL()` and `request.getQueryString()` are used to build and run a regex expression. The attacker doesn't have to use a browser and may send a specially crafted Referer header programmatically. Since the attacker controls the string and the regex pattern he may cause a ReDoS by regex catastrophic backtracking on the server side. This problem has been fixed in Roller 6.0.2.

Server-side Request Forgery (SSRF) and File Enumeration vulnerability in Apache Roller 5.2.1, 5.2.0 and earlier unsupported versions relies on Java SAX Parser to implement its XML-RPC interface and by default that parser supports external entities in XML DOCTYPE, which opens Roller up to SSRF / File Enumeration vulnerability. Note that this vulnerability exists even if Roller XML-RPC interface is disable via the Roller web admin UI. Mitigation: There are a couple of ways you can fix this vulnerability: 1) Upgrade to the latest version of Roller, which is now 5.2.2 2) Or, edit the Roller web.xml file and comment out the XML-RPC Servlet mapping as shown below: <!-- <servlet-mapping> <servlet-name>XmlRpcServlet</servlet-name> <url-pattern>/roller-services/xmlrpc</url-pattern> </servlet-mapping> -->

The XML-RPC protocol support in Apache Roller before 5.0.3 allows attackers to conduct XML External Entity (XXE) attacks via unspecified vectors.

Certain getText methods in the ActionSupport controller in Apache Roller before 5.0.2 allow remote attackers to execute arbitrary OGNL expressions via the first or second parameter, as demonstrated by the pageTitle parameter in the !getPageTitle sub-URL to roller-ui/login.rol, which uses a subclass of UIAction, aka "OGNL Injection."

Multiple cross-site scripting (XSS) vulnerabilities in Apache Roller before 5.0.2 allow remote attackers to inject arbitrary web script or HTML via vectors related to the search results in the (1) RSS and (2) Atom feed templates.

Multiple cross-site scripting (XSS) vulnerabilities in Apache Roller before 5.0.1 allow remote authenticated users to inject arbitrary web script or HTML by leveraging the blogger role.

Multiple cross-site request forgery (CSRF) vulnerabilities in the admin/editor console in Apache Roller before 5.0.1 allow remote attackers to hijack the authentication of admins or editors by leveraging the HTTP POST functionality.

Cross-site scripting (XSS) vulnerability in Apache Roller 2.3, 3.0, 3.1, and 4.0 allows remote attackers to inject arbitrary web script or HTML via the q parameter in a search action.