There is a Unrestricted Upload of File vulnerability in ShowDoc v2.10.3 in GitHub repository star7th/showdoc prior to 2.10.4.
https://huntr.dev/bounties/d205c489-3266-4ac4-acb7-c8ee570887f7
https://github.com/star7th/showdoc/commit/bd792a89c0325836fbd64784f4c4117c0171416b