Multiple cross-site scripting (XSS) vulnerabilities in txtForum 1.0.4-dev and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) prev, (2) next, and (3) rand5 parameters in (a) index.php; the (4) r_username and (5) r_loc parameters in (b) new_topic.php; the (6) r_num, (7) r_family_name, (8) r_icq, (9) r_yahoo, (10) r_aim, (11) r_homepage, (12) r_interests, (13) r_about, (14) selected1, (15) selected0, (16) signature_selected1, (17) signature_selected0, (18) smile_selected1, (19) smile_selected0, (20) ubb_selected1, and (21) ubb_selected0 parameters in (c) profile.php; the (22) quote and (23) tid parameters in (d) reply.php; and the (24) tid, (25) sticked, and (26) mid parameters in (e) view_topic.php.