CVE-2026-42196 CRITICAL

CVE-2026-42196: django-s3file: Relative path traversal

Vendor Codingjoe
Product django-s3file
Weakness CWE-22 · Path traversal
Published May 12, 2026
Last update May 13, 2026

CVSS base score

9.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

What the vulnerability does

01Description

django-s3file is a lightweight file upload input for Django and Amazon S3. Prior to 7.0.2, S3FileMiddleware is vulnerable to relative path traversal attacks, where an attacker can use a modified request to escape pre-signed upload locations and have the Django application load files from random locations into request.FILES. Depending on how files are handled, this may lead to confidentiality and integrity issues. This vulnerability is fixed in 7.0.2.

Key dates

02Disclosure timeline

May 12, 2026 CVE published
May 13, 2026 Record updated