CVE-2024-28147Public exploitNetwork attack vector

Stored XSS and DoS via preview upload

Published Jun 20, 2024 · Updated Feb 13, 2025

Unrestricted file upload in metaVentis GmbH edu-sharing allows remote authenticated users to execute stored JavaScript in visitors' browsers. The collection icon endpoint accepts caller-controlled mimetype values, stores PNG-prefixed HTML or entity-expanding SVG content, and later serves or parses it at the direct preview URL. Affected 8.0, 8.1, and 9.0 branches precede 8.0.8-RC2, 8.1.4-RC0, and 9.0.0-RC19 respectively; exploitation requires an account and a visitor to open the preview, enabling browser script execution or service interruption.

CVSS severity7.4
High
EPSS probability0.83%
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 metaVentis GmbH edu-sharing allows remote authenticated users to execute stored JavaScript in visitors' browsers. The collection icon endpoint accepts caller-controlled mimetype values, stores PNG-prefixed HTML or entity-expanding SVG content, and later serves or parses it at the direct preview URL. Affected 8.0, 8.1, and 9.0 branches precede 8.0.8-RC2, 8.1.4-RC0, and 9.0.0-RC19 respectively; exploitation requires an account and a visitor to open the preview, enabling browser script execution or service interruption.

The record

CVE
CVE-2024-28147
Published
Jun 20, 2024
Updated
Feb 13, 2025
Vendor
metaVentis GmbH
Product
edu-sharing
Classifications
CWE-434, T1190, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=0 <8.0.8-rc2
  2. Affected versionversion=0 <8.1.4-rc0
  3. Affected versionversion=0 <9.0.0-rc19
  4. Affected versionversion=<8.0.8-RC2, <8.1.4-RC0, <9.0.0-RC19

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

metaVentis GmbH · edu-sharingversion=0 <8.0.8-rc2; version=0 <8.1.4-rc0; version=0 <9.0.0-rc19; version=<8.0.8-RC2, <8.1.4-RC0, <9.0.0-RC19

Published CVSS scores

7.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/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.

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
T1190Exploit Public-Facing Application
T1499.004Application or System Exploitation

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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