Description
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in gleam-wisp wisp allows arbitrary file read via percent-encoded path traversal. The wisp.serve_static function is vulnerable to path traversal because sanitization runs before percent-decoding. The encoded sequence %2e%2e passes through string.replace unchanged, then uri.percent_decode converts it to .., which the OS resolves as directory traversal when the file is read. An unauthenticated attacker can read any file readable by the application process in a single HTTP request, including application source code, configuration files, secrets, and system files. This issue affects wisp: from 2.1.1 before 2.2.1.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
gleam-wisp wisp
Default version status: unaffected
2.1.1 to < 2.2.1affected
pkg:hex/wispgleam-wisp wisp
Default version status: unaffected
129dcb1fe10ab1e676145d91477535e1c90ab550 to < 161118c431047f7ef1ff7cabfcc38981877fdd93affected
pkg:github/gleam-wisp/wisp