Cross Site Scripting Vulnerability in cskefu File Upload Component
CVE-2026-2557

5.1MEDIUM

Key Information:

Vendor

cskefu

Status
Cskefu
Vendor
CVE Published:
16 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2557?

A vulnerability has been identified in the file upload functionality of cskefu, specifically within the MediaController.java file. This issue allows attackers to execute cross site scripting (XSS) attacks by manipulating upload processes. The vulnerability can be exploited remotely, exposing users and systems to potential attacks. Although the vendor was notified about this vulnerability, there has been no response to the disclosure, thereby increasing the urgency for users to assess their risk and implement necessary security measures.

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Deploy the Patch

Affected Version(s)

cskefu 8.0.0

cskefu 8.0.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-2557 - Proof of Concept

References

https://vuldb.com/?id.346165
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346165
signaturepermissions-required
https://vuldb.com/?submit.750729
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

xcxr (VulDB User)
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