Authenticated arbitrary file upload via preserved extensions
Published Jul 25, 2025 · Updated Jul 25, 2025
Unrestricted file upload in zhousg Letao allows remote authenticated users to store arbitrary files through the product-image endpoint. The addProductPic handler preserves the original filename extension and renames each parsed file into the web-accessible public/upload/product directory without a type allowlist. Valid administrative access is required, and retrieving an uploaded HTML file executes attacker-supplied script in a visitor's browser.
Summary
What happened
Unrestricted file upload in zhousg Letao allows remote authenticated users to store arbitrary files through the product-image endpoint. The addProductPic handler preserves the original filename extension and renames each parsed file into the web-accessible public/upload/product directory without a type allowlist. Valid administrative access is required, and retrieving an uploaded HTML file executes attacker-supplied script in a visitor's browser.
The record
- CVE
- CVE-2025-8128
- Published
- Jul 25, 2025
- Updated
- Jul 25, 2025
- Vendor
- zhousg
- Product
- Letao
- Classifications
- CWE-284, CWE-434, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 25, 2025CVE publishedPublication date reported by the CVE source.
- Jul 25, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=7d8df0386a65228476290949e0413de48f7fbe98
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
- Letao arbitrary file upload proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo