An issue was discovered in Nim before 1.6.2. The RST module of the Nim language stdlib, as used in NimForum and other products, permits the javascript: URI scheme and thus can lead to XSS in some applications. (Nim versions 1.6.2 and later are fixed; there may be backports of the fix to some earlier versions. NimForum 2.2.0 is fixed.)

MISC:https://forum.nim-lang.org/t/8852 | MISC:https://github.com/nim-lang/Nim/commit/46275126b89218e64844eee169e8ced05dd0e2d7 | MISC:https://github.com/nim-lang/Nim/compare/v1.6.0...v1.6.2 | MISC:https://github.com/nim-lang/Nim/pull/19134 | MISC:https://github.com/nim-lang/nimforum