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5.1

CSKefu File Upload Function Allows Remote Code Execution

CVE-2026-2557
Summary

A security weakness in CSKefu's file upload feature allows an attacker to inject malicious code, potentially causing harm to your website or customers. This weakness can be exploited remotely, so it's essential to update CSKefu to the latest version (8.0.1 or later) to fix the issue.

What to do

No fix is available yet. Check with your software vendor for updates.

Affected software
VendorProductAffected versionsFix available
cskefu cskefu <= 8.0.1 –
Original title
A vulnerability was detected in cskefu up to 8.0.1. Impacted is the function Upload of the file com/cskefu/cc/controller/resource/MediaController.java of the component File Upload. The manipulation...
Original description
A vulnerability was detected in cskefu up to 8.0.1. Impacted is the function Upload of the file com/cskefu/cc/controller/resource/MediaController.java of the component File Upload. The manipulation results in cross site scripting. The attack may be launched remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
nvd CVSS2.0 4.0
nvd CVSS3.1 5.4
nvd CVSS4.0 5.1
Vulnerability type
CWE-79 Cross-site Scripting (XSS)
CWE-94 Code Injection
Published: 16 Feb 2026 · Updated: 11 Mar 2026 · First seen: 6 Mar 2026