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Dotnetnuke CVE-2025-59548

MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2025-09-23 security-advisories@github.com
5.9
CVSS 4.0 · Vendor: github
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 5.9 (MEDIUM). Attack characteristics: network attack vector, low complexity, high privileges required, user interaction required. EPSS exploitation probability: 0.02%.

Exploit ScenarioDerived

A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

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.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

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. DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.1.0, specially crafted URLs to the FileBrowser are vulnerable to javascript injection, affecting any unsuspecting user clicking such link. This issue has been patched in version 10.1.0. Affected products include: Dnnsoftware Dotnetnuke. Version information: version 10.1.0.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (github) PRIMARY 5.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N

Primary rating from Vendor (github) · only source for this CVE.

CVSS VectorVendor: github

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
Active
Vulnerable system: Confidentiality
None
Vulnerable system: Integrity
None
Vulnerable system: Availability
None
Subsequent system: Confidentiality
High
Subsequent system: Integrity
None
Subsequent system: Availability
None

DescriptionCVE.org

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.1.0, specially crafted URLs to the FileBrowser are vulnerable to javascript injection, affecting any unsuspecting user clicking such link. This issue has been patched in version 10.1.0.

Executive ViewAI

Why It Matters

Organizations using the Microsoft ecosystem. should be aware of moderate risk from CVE-2025-59548, a cross-site scripting vulnerability rated CVSS 5.9. Attackers could inject scripts to steal sessions or perform actions as authenticated users. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low
Compensating Controls

Apply vendor patch. If patching is delayed: implement CSP headers, enable HttpOnly cookies, deploy WAF XSS rules.

Threat Intelligence Overview

EPSS Score
0.0%
Top 94% exploitable
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
Low

Priority Score

30
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +30
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Affected Products (CPE)CVE.org

cpe:2.3:a:dnnsoftware:dotnetnuke:*:*:*:*:*:*:*:*
CVE-2017-9822 HIGH POC
8.8 Jul 20

DNN (aka DotNetNuke) before 9.1.1 has Remote Code Execution via a cookie, aka "2017-08 (Critical) Possible remote code e

CVE-2015-2794 CRITICAL POC
9.8 Feb 06

The installation wizard in DotNetNuke (DNN) before 7.4.1 allows remote attackers to reinstall the application and gain S

CVE-2025-64095 CRITICAL POC
9.8 Oct 28

Unauthenticated attackers can upload and overwrite files in DNN Platform before 10.1.1 through the default HTML editor p

CVE-2025-52488 HIGH POC
8.6 Jun 21

DNN (DotNetNuke) CMS versions 6.0.0 through 10.0.0 contain a vulnerability that can expose NTLM hashes to a third-party

CVE-2020-5187 HIGH POC
8.8 Feb 24

DNN (formerly DotNetNuke) through 9.4.4 allows Path Traversal (issue 2 of 2). Rated high severity (CVSS 8.8), this vulne

CVE-2020-5188 MEDIUM POC
6.5 Feb 24

DNN (formerly DotNetNuke) through 9.4.4 has Insecure Permissions. Rated medium severity (CVSS 6.5), this vulnerability i

CVE-2020-37103 MEDIUM POC
6.4 Feb 03

DotNetNuke 9.5 contains a persistent cross-site scripting vulnerability that allows normal users to upload malicious XML

CVE-2019-12562 MEDIUM POC
6.1 Sep 26

Stored Cross-Site Scripting in DotNetNuke (DNN) Version before 9.4.0 allows remote attackers to store and embed the mali

CVE-2020-5186 MEDIUM POC
5.4 Feb 24

DNN (formerly DotNetNuke) through 9.4.4 allows XSS (issue 1 of 2). Rated medium severity (CVSS 5.4), this vulnerability

CVE-2026-24838 CRITICAL
9.1 Jan 28

DNN (DotNetNuke) CMS has a stored XSS vulnerability (CVSS 9.1) allowing persistent script injection that executes for al

CVE-2025-59545 CRITICAL
9.0 Sep 23

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Rated crit

CVE-2022-2922 MEDIUM POC
4.9 Sep 30

Relative Path Traversal in GitHub repository dnnsoftware/dnn.platform prior to 9.11.0. Rated medium severity (CVSS 4.9),

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