Unrestricted Upload Vulnerability in Diem-Project Diem Widget Editor
CVE-2026-82679

5.3MEDIUM

Key Information:

Vendor

Diem-project

Status
Diem
Vendor
CVE Published:
31 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82679?

A security flaw exists in the Diem Widget Editor component, specifically in the dmWidgetContentBaseMediaForm.php file. This vulnerability allows an attacker to manipulate the system and perform unrestricted file uploads, which can be initiated remotely. This poses a significant risk for unauthorized access and potential system compromise. Despite early notification regarding the issue, the project has not taken responsive action, leaving the vulnerability unaddressed.

Affected Version(s)

diem 5.1.0

diem 5.1.1

diem 5.1.2

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-2026-82679 - Proof of Concept

References

https://vuldb.com/vuln/397174
vdb-entry
https://vuldb.com/vuln/397174/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82679
third-party-advisory

CVSS V4

Score:
5.3
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

milocat (VulDB User)
VulDB CNA Team
.