VulnerabilityPublished 27 Jan 2026

CVE-2026-24784: dnnsoftware Dnn.Platform · Cross-site Scripting

Affects dnnsoftware Dnn.PlatformSource CVE Database V5

Not known to be exploited · CVSS 6.8 Medium : upgrade to 10.2.0 or 9.13.10 when convenient.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score

6.8Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 10.2.0, 9.13.10

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: None
Scope: Changed
Confidentiality: High
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 27 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Dnn.Platform to 10.2.0 or 9.13.10; dnnsoftware/Dnn.Platform to 9.13.10.

Affected software

Product	Affected	Fixed in
dnnsoftwareDnn.Platform	Affected >=10.0.0 <10.2.0	Fixed in 10.2.0
dnnsoftwareDnn.Platform	Affected >=9.0.0 <9.13.10	Fixed in 9.13.10
GitHubdnnsoftware/Dnn.Platform`pkg:github/dnnsoftware/Dnn.Platform`Other threats	Affected >=9.0.0 <9.13.10 =10.2.0	Fixed in 9.13.10

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should immediately upgrade all Dnn.Platform instances to version 9.13.10 or later (including 10.2.0 or later) to apply the official fix. Until upgrades are completed, restrict module header and footer editing permissions strictly to trusted administrators and content editors with verified credentials. Implement robust access controls and monitor for unusual editing activity in these modules. Employ Content Security Policy (CSP) headers to limit the execution of unauthorized scripts on web pages. Conduct regular audits of CMS content, especially module headers and footers, to detect and remove any injected scripts. Enhance logging and alerting for changes to critical CMS components. Educate content editors about the risks of script injection and enforce strong authentication mechanisms, such as multifactor authentication, to reduce the risk of account compromise. Finally, integrate vulnerability scanning and penetration testing focused on CMS components to identify similar injection flaws proactively.

Description

CVE-2026-24784 is a cross-site scripting (XSS) vulnerability in the Dnn. Platform CMS affecting versions from 9.0.0 up to but not including 9.13.10 and 10.2.0. The flaw allows a content editor with module header/footer editing privileges to inject malicious scripts that execute in the browsers of other users. The vulnerability requires authenticated access with elevated privileges but does not require user interaction to trigger once the malicious content is loaded.

Impact

For European organizations, this vulnerability poses a risk primarily to confidentiality, as malicious scripts injected by authorized content editors can execute in the browsers of other users, potentially stealing session cookies, credentials, or other sensitive data. Organizations with public-facing Dnn-based portals or intranets where multiple editors have module header/footer editing rights are particularly vulnerable. The impact is amplified in sectors handling sensitive personal or financial data, such as government, healthcare, and finance. Exploitation could lead to unauthorized access to user accounts or data leakage, undermining trust and compliance with GDPR. While the vulnerability does not directly affect system integrity or availability, the resulting data breaches or account compromises could have significant operational and reputational consequences. The requirement for high privileges limits the attack surface but insider threats or compromised editor accounts could be leveraged by attackers. The lack of known exploits suggests limited active targeting currently, but the medium severity and ease of exploitation once access is obtained warrant proactive mitigation.

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #1OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Implementation · Architecture and Design
Understand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages.
Architecture and Design · Implementation · Attack Surface Reduction
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide…
OWASP Cheat Sheets
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Injection Prevention (opens in a new tab)
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
OWASP ASVS 4.0.3
V5.3.3 (opens in a new tab)
V1.5.1 (opens in a new tab)
Attack patterns
XSS Using MIME Type Mismatch (opens in a new tab)
DOM-Based XSS (opens in a new tab)
Reflected XSS (opens in a new tab)
Stored XSS (opens in a new tab)
Cross-Site Scripting (XSS) (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-jjwg-4948-6wxp (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 4 Feb 2026, 09:25 UTC

WeaknessesCWE-79

Technical details

References

Community reviews

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