A SQL injection in classes/handler/public.php in the forgotpass component of Tiny Tiny RSS 17.4 exists via the login parameter.
https://git.tt-rss.org/git/tt-rss/commit/2352c320c2ed34ec7df1ad22f0c55a1b26489815
https://discourse.tt-rss.org/t/sql-injection-in-forgotpass-fixed/669