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CVE-2026-42196

CRITICAL
9.9
CVSS 4.0
Description
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.

Metadata

CVE ID
CVE-2026-42196
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-04-25 01:53 UTC
Published
2026-05-12 20:58 UTC
Last updated
2026-05-13 15:37 UTC
Primary CWE
CWE-22
CWE-22: Improper Limitation of a Pathname to a Restricted Di…
Vendor / Product
codingjoe / django-s3file
Sources
cve.org  ·  NVD

Severity & Metrics

9.9 CRITICAL CVSS 4.0
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
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
codingjoe django-s3file — < 7.0.2
Weakness (CWE)
CWESourceDescription
CWE-22 cna CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-26 cna CWE-26: Path Traversal: '/dir/../filename'
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.9 CRITICAL 4.0 cna 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
References (1)
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