CVE-2026-27641: critical vulnerability in jugmac00 flask-reuploaded
Flask-Reuploaded vulnerable to Remote Code Execution via Server-Side Template Injection
Published
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 1.3%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
jugmac00 · flask-reuploadedRelated CVEs — jugmac00 flask-reuploaded
In the same product, most dangerous first.