CVE-2025-48378Network attack vector

Stored XSS via namespaced SVG script elements

Published May 23, 2025 · Updated May 23, 2025

Stored XSS in DNN Platform before 9.13.9 allows remote authenticated users to execute scripts when another user views an inline SVG. SvgFileChecker passes uploaded SVG text to PortalSecurity.ValidateInput with a generic NoScripting filter that misses namespaced script elements. Low-privileged upload access and passive interaction by a viewer are required, and exploitation exposes data in the viewer's browser context.

CVSS severity6.1
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in DNN Platform before 9.13.9 allows remote authenticated users to execute scripts when another user views an inline SVG. SvgFileChecker passes uploaded SVG text to PortalSecurity.ValidateInput with a generic NoScripting filter that misses namespaced script elements. Low-privileged upload access and passive interaction by a viewer are required, and exploitation exposes data in the viewer's browser context.

The record

CVE
CVE-2025-48378
Published
May 23, 2025
Updated
May 23, 2025
Vendor
DNN Software
Product
DNN Platform
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 23, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=< 9.13.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

DNN Software · DNN Platformversion=< 9.13.9

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.1GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:N/SA: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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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