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.
INFO
Published Date :
2026-03-10T21:34:47.859Z
Last Modified :
2026-04-06T16:44:07.589Z
Source :
EEF
AFFECTED PRODUCTS
The following products are affected by CVE-2026-28807 vulnerability.
| Vendors | Products |
|---|---|
| Gleam-wisp |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-28807.
