darkhttpd before 1.15 uses strcmp (which is not constant time) to verify authentication, which makes it easier for remote attackers to bypass authentication via a timing side channel.
https://github.com/emikulic/darkhttpd/compare/v1.14...v1.15
https://github.com/emikulic/darkhttpd/commit/f477619d49f3c4de9ad59bd194265a48ddc03f04