Authenticated arbitrary file write via original filename
Published Jun 8, 2026 · Updated Jun 8, 2026
Path traversal in hs-web hsweb-framework 5.0.0 and 5.0.1 allows remote authenticated users to write files via crafted upload names. When useOriginalFileName is enabled, FileUploadProperties.createStaticSavePath concatenates the client-controlled filename into the save path without reducing it to a safe basename, so ../ segments escape the dated upload directory. Low-privileged access to the file upload endpoint and a permitted upload type are required; successful exploitation overwrites files writable by the server process.
Summary
What happened
Path traversal in hs-web hsweb-framework 5.0.0 and 5.0.1 allows remote authenticated users to write files via crafted upload names. When useOriginalFileName is enabled, FileUploadProperties.createStaticSavePath concatenates the client-controlled filename into the save path without reducing it to a safe basename, so ../ segments escape the dated upload directory. Low-privileged access to the file upload endpoint and a permitted upload type are required; successful exploitation overwrites files writable by the server process.
The record
- CVE
- CVE-2026-11470
- Published
- Jun 8, 2026
- Updated
- Jun 8, 2026
- Vendor
- hs-web
- Product
- hsweb-framework
- Classifications
- CWE-22, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 8, 2026CVE publishedPublication date reported by the CVE source.
- Jun 8, 2026Record 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=5.0.0
- Affected versionversion=5.0.1
What conditions does exploitation require?
What is affected?
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
- GitHub issue 344 authenticated file-upload traversal PoCproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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