Anonymous Coward writes "Cert has published a major advisory on malicious HTML tags embedded in client Web requests. Basically, all clients and all Web servers are affected by this problem. If a Web site does not scrupulously check all input data before posting it back to the user, malicious scripts could be executed over supposedly secure and trusted connections. Recommended solutions include completely overhauling Web sites, disabling cookies and scripts, and 'Web Users Should Not Engage in Promiscuous Browsing.' Sun, Microsoft, and Apache should have notices up on their sites shortly. "