What is the CVSS score of CVE-2025-47828?

CVE-2025-47828 has a CVSS 3.1 base score of 6.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.2%.

Which versions of Lumi H5P-Nodejs-library are affected by CVE-2025-47828?

CVE-2025-47828 presents moderate security risk, a cross-site scripting vulnerability rated CVSS 6.4. Attackers could inject scripts to steal sessions or perform actions as authenticated users.. A patch is available.

How to fix or mitigate CVE-2025-47828?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Lumi H5P-Nodejs-library CVE-2025-47828

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2025-05-11 cve@mitre.org

XSS

6.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.4 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 18:41 vuln.today

CVE Published

May 11, 2025 - 03:15 nvd

MEDIUM 6.4

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

5 npm packages depend on @lumieducation/h5p-server (5 direct, 0 indirect)

Ecosystem-wide dependent count for version 9.3.3.

DescriptionCVE.org

Lumi H5P-Nodejs-library before 9.3.3 omits a sanitizeHtml call for plain text strings.

AnalysisAI

Lumi H5P-Nodejs-library before 9.3.3 omits a sanitizeHtml call for plain text strings. Rated medium severity (CVSS 6.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Lumi H5P-Nodejs-library before 9.3.3 omits a sanitizeHtml call for plain text strings. Version information: before 9.3.3.

Affected ProductsAI

See vendor advisory for affected versions.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.