Exploitation Summary
EIP tracks 1 public exploit for CVE-2026-27641. PoCs published by Max78000.
AI-analyzed exploit summary This PoC demonstrates an arbitrary file write vulnerability in Flask-Reuploaded < 1.5.0 by exploiting improper path sanitization in file uploads. Attackers can traverse directories using crafted filenames (e.g., `../../malicious.txt`) to write files outside the intended upload directory.
Description
Flask-Reuploaded provides file uploads for Flask. A critical path traversal and extension bypass vulnerability in versions prior to 1.5.0 allows remote attackers to achieve arbitrary file write and remote code execution through Server-Side Template Injection (SSTI). Flask-Reuploaded has been patched in version 1.5.0. Some workarounds are available. Do not pass user input to the `name` parameter, use auto-generated filenames only, and implement strict input validation if `name` must be used.
Exploits (1)
This PoC demonstrates an arbitrary file write vulnerability in Flask-Reuploaded < 1.5.0 by exploiting improper path sanitization in file uploads. Attackers can traverse directories using crafted filenames (e.g., `../../malicious.txt`) to write files outside the intended upload directory.
References (3)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H