Stack-based buffer overflow in the (1) put_dir function in mongoose.c in Mongoose 3.0, (2) put_dir function in yasslEWS.c in yaSSL Embedded Web Server (yasslEWS) 0.2, and (3) _shttpd_put_dir function in io_dir.c in Simple HTTPD (shttpd) 1.42 allows remote attackers to execute arbitrary code via an HTTP PUT request, as exploited in the wild in 2011.

Sergey Lyubka Simple HTTPD (shttpd) 1.38 and earlier on Windows allows remote attackers to download arbitrary CGI programs or scripts via a URI with an appended (1) '+' character, (2) '.' character, (3) %2e sequence (hex-encoded dot), or (4) hex-encoded character greater than 0x7f. NOTE: the %20 vector is already covered by CVE-2007-3407.

Directory traversal vulnerability in Sergey Lyubka Simple HTTPD (shttpd) 1.38 and earlier on Windows allows remote attackers to read arbitrary files via a ..\ (dot dot backslash) in the URI.

The safe_path function in shttp before 0.0.5 allows remote attackers to conduct directory traversal attacks and read files via a combination of ".." and sub-directory specifiers that resolve to a pathname that is at or below the same level as the web document root, but in a different part of the directory tree.

Cross-site scripting (XSS) vulnerability in Kurinton sHTTPd 20070408 and earlier allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.