The Battle for Wesnoth Project version 1.7.0 through 1.14.3 contains a Code Injection vulnerability in the Lua scripting engine that can result in code execution outside the sandbox. This attack appear to be exploitable via Loading specially-crafted saved games, networked games, replays, and player content (CVE-2018-1999023).
This is fixed in version 1.14.4, together with several non-security-related bug fixes and enhancements.