The uncompress_buffer function in src/server/simple_wml.cpp in Wesnoth before r33069 allows remote attackers to cause a denial of service via a large compressed WML document.
The read_game_map function in src/terrain_translation.cpp in Wesnoth before r32987 allows remote attackers to cause a denial of service (memory consumption and daemon hang) via a map with a large (1) width or (2) height.
Directory traversal vulnerability in the WML engine preprocessor for Wesnoth 1.2.x before 1.2.8, and 1.3.x before 1.3.12, allows remote attackers to read arbitrary files via ".." sequences in unknown vectors.
Unspecified vulnerability in Wesnoth 1.2.x before 1.2.8, and 1.3.x before 1.3.12, allows attackers to cause a denial of service (hang) via a "faulty add-on" and possibly execute other commands via unknown vectors related to the turn_cmd option.
The multiplayer engine in Wesnoth 1.2.x before 1.2.7 and 1.3.x before 1.3.9 allows remote servers to cause a denial of service (crash) via a long message with multibyte characters that can produce an invalid UTF-8 string after it is truncated, which triggers an uncaught exception, involving the truncate_message function in server/server.cpp. NOTE: this issue affects both clients and servers.