CVE-2024-26503Public exploitNetwork attack vector

Authenticated code execution via unrestricted file upload

Published Mar 14, 2024 · Updated Aug 28, 2024

Unrestricted file upload in GUnet Open eClass Platform 3.15 and earlier allows remote authenticated users to execute arbitrary code. The certbadge.php endpoint accepts a crafted uploaded file without enforcing restrictions that prevent server-executable content. Exploitation requires a high-privilege authenticated account and executes code in the web server context.

CVSS severity9.1
Critical
EPSS probability1.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in GUnet Open eClass Platform 3.15 and earlier allows remote authenticated users to execute arbitrary code. The certbadge.php endpoint accepts a crafted uploaded file without enforcing restrictions that prevent server-executable content. Exploitation requires a high-privilege authenticated account and executes code in the web server context.

The record

CVE
CVE-2024-26503
Published
Mar 14, 2024
Updated
Aug 28, 2024
Vendor
GUnet
Product
Open eClass Platform
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=3.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GUnet · Open eClass Platformversion=3.15

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

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.

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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
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

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Your stack

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