Unrestricted Upload Vulnerability in Funadmin Frontend Chunked Upload Component
CVE-2026-7733

6.9MEDIUM

Key Information:

Vendor

FunAdmin

Status
Funadmin
Vendor
CVE Published:
4 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7733?

A vulnerability has been identified in Funadmin versions up to 7.1.0-rc6 within the Frontend Chunked Upload Endpoint. It stems from a flaw in the UploadService::chunkUpload function located in app/common/service/UploadService.php. This weakness allows an attacker to manipulate the File argument, resulting in unrestricted file uploads. Such exploitation can be executed remotely without authentication, increasing the risk for users. It is recommended to apply patch 59 to mitigate this security issue.

Affected Version(s)

funadmin 7.1.0-rc1

funadmin 7.1.0-rc2

funadmin 7.1.0-rc3

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-2026-7733 - Proof of Concept

References

https://vuldb.com/vuln/360908
vdb-entrytechnical-description
https://vuldb.com/vuln/360908/cti
signaturepermissions-required
https://vuldb.com/submit/807559
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

anch0r (VulDB User)
.