Cross-site scripting (XSS) vulnerability in Huawei SEQ Analyst before V200R002C03LG0001CP0022 allows remote attackers to inject arbitrary web script or HTML via the command XML element in the req parameter to flexdata.action in (1) common/, (2) monitor/, or (3) psnpm/ or the (4) module XML element in the req parameter to flexdata.action in monitor/.