Authorization Bypass Vulnerability in Diem Project Diem
CVE-2026-86183

6.9MEDIUM

Key Information:

Vendor

Diem-project

Status
Diem
Vendor
CVE Published:
6 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-86183?

A vulnerability exists in the Diem Project's dmWidget component, specifically within the file dmFrontPlugin/modules/dmWidget/lib/BasedmWidgetActions.class.php. This flaw enables unauthorized users to bypass security measures by manipulating the 'widget_id' argument. As a result, remote attackers can exploit this vulnerability, which is publicly accessible, to gain unauthorized access. A patch has been created (116974edfb9a5b8bd69cb13586dc62bcdbb485ad) to address this issue, but the project maintainers have yet to respond to early reports regarding the problem.

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-2026-86183 - Proof of Concept

References

https://vuldb.com/vuln/399315
vdb-entrytechnical-description
https://vuldb.com/vuln/399315/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-86183
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
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

yingxiujie (VulDB User)
VulDB CNA Team
.