What is CVE-2026-24836?

CVE-2026-24836 is a high-severity vulnerability in Dnnsoftware Dnn.platform, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-01-28.

How severe is CVE-2026-24836?

High severity. CVSS v3 base score is 7.6 out of 10.

XSS in Dnnsoftware Dnn.platform

CVE-2026-24836

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Starting in version 9.0.0 and prior to versions 9.13.10 and 10.2.0, extensions could write richtext in log notes which can include scripts that would run in the PersonaBar when displayed. Versions 9.13.10 and 10.2.0 contain a fix for the issue.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-01-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (16.7th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 16.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000

Affected products

Dnnsoftware Dnn.platform — versions >= 9.0.0, < 9.13.10, >= 10.0.0, < 10.2.0
Dnnsoftware Dotnetnuke

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-2g5g-hcgh-q3rp (Vendor Advisory)

Frequently asked questions

What is CVE-2026-24836?: CVE-2026-24836 is a high-severity vulnerability in Dnnsoftware Dnn.platform, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-01-28.
How severe is CVE-2026-24836?: High severity. CVSS v3 base score is 7.6 out of 10.