S3 file disclosure and deletion via unsigned paths
Published Jun 6, 2022 · Updated Apr 22, 2025
Path traversal in codingjoe django-s3file before 5.5.1 allows remote attackers to read or delete S3 files via crafted form data. S3FileMiddleware trusts attacker-supplied s3file field names and object paths, opens those paths from storage, and injects the resulting files into request.FILES without verifying that the path belongs to the signed upload location. Any reachable Django view can carry the injected files; authentication on every file-handling view narrows exposure, while AWS_LOCATION confines traversal to that prefix.
Summary
What happened
Path traversal in codingjoe django-s3file before 5.5.1 allows remote attackers to read or delete S3 files via crafted form data. S3FileMiddleware trusts attacker-supplied s3file field names and object paths, opens those paths from storage, and injects the resulting files into request.FILES without verifying that the path belongs to the signed upload location. Any reachable Django view can carry the injected files; authentication on every file-handling view narrows exposure, while AWS_LOCATION confines traversal to that prefix.
The record
- CVE
- CVE-2022-24840
- Published
- Jun 6, 2022
- Updated
- Apr 22, 2025
- Vendor
- codingjoe
- Product
- django-s3file
- Classifications
- CWE-96, CWE-22, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 6, 2022CVE publishedPublication date reported by the CVE source.
- Apr 22, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 5.5.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Malicious multipart form-data traversal requestproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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