Cross-site scripting (XSS) vulnerability in the Bluemoon, Inc. (1) BackPack 0.91 and earlier, (2) BmSurvey 0.84 and earlier, (3) newbb_fileup 1.83 and earlier, (4) News_embed (news_fileup) 1.44 and earlier, and (5) PopnupBlog 3.19 and earlier modules for XOOPS 2.0.x, XOOPS Cube 2.1, and ImpressCMS allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.