CVE-2026-82679Public exploitNetwork attack vector

Authenticated privilege escalation via unrestricted upload

Published Aug 31, 2026 · Updated Aug 31, 2026

Unrestricted file upload in Diem 5.1.3 and earlier allows remote authenticated users to upload arbitrary files through the Widget Editor. The public record names dmWidgetContentBaseMediaForm.php but does not disclose the affected function or failed validation operation. Low-privileged access is required, no user interaction is needed, and the documented consequence is privilege escalation rather than confirmed code execution.

CVSS severity6.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Unrestricted file upload in Diem 5.1.3 and earlier allows remote authenticated users to upload arbitrary files through the Widget Editor. The public record names dmWidgetContentBaseMediaForm.php but does not disclose the affected function or failed validation operation. Low-privileged access is required, no user interaction is needed, and the documented consequence is privilege escalation rather than confirmed code execution.

The record

CVE
CVE-2026-82679
Published
Aug 31, 2026
Updated
Aug 31, 2026
Vendor
Diem Project
Product
Diem
Classifications
CWE-434, CWE-284, CWE-266, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 31, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.1.0
  2. Affected versionversion=5.1.1
  3. Affected versionversion=5.1.2
  4. Affected versionversion=5.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Diem Project · Diemversion=5.1.0; version=5.1.1; version=5.1.2; version=5.1.3

Published CVSS scores

6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
5.7VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-284Improper Access Control
CWE-266Incorrect Privilege Assignment for Critical Resource
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo