CVE-2025-47828Network attack vector

XSS via unsanitized plain-text field values

Published May 11, 2025 · Updated May 12, 2025

Cross-site scripting in Lumi H5P-Nodejs-library before 9.3.3 allows remote authenticated users to inject script through plain-text fields. SemanticsEnforcer.enforceSemanticsRecursive returns plain-text field values without passing them to sanitizeHtml, while formatted text follows a sanitization path. Low-privileged network access is required, and injected script can read or alter data available in the rendering context.

CVSS severity6.4
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Lumi H5P-Nodejs-library before 9.3.3 allows remote authenticated users to inject script through plain-text fields. SemanticsEnforcer.enforceSemanticsRecursive returns plain-text field values without passing them to sanitizeHtml, while formatted text follows a sanitization path. Low-privileged network access is required, and injected script can read or alter data available in the rendering context.

The record

CVE
CVE-2025-47828
Published
May 11, 2025
Updated
May 12, 2025
Vendor
Lumi Education UG
Product
h5p-nodejs-library
Classifications
CWE-79, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 11, 2025CVE publishedPublication date reported by the CVE source.
  2. May 12, 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 <9.3.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Lumi Education UG · h5p-nodejs-libraryversion=0 <9.3.3

Published CVSS scores

6.4MITRECVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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