GHSA-67qg-7284-2277: django-s3file (CVE-2026-42196)

Package	Ecosystem	Affected	Fixed in
django-s3file	PyPI	<7.0.2	7.0.2

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The django-s3file package is vulnerable to relative path traversal in versions before 7.0.2. Its S3FileMiddleware can be made to load files from outside the intended pre-signed upload locations into request.FILES, which may lead to confidentiality and integrity problems depending on how the application handles those files. The source does not say what request access an attacker needs. Upgrade django-s3file to version 7.0.2 or later.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.9	Critical	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	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0056, the 47th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:07 UTC First seen by agentprime
31 Oct 2026, 14:07 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.