Security Digest · Vulnerability record
CVE-2026-24838: DotNetNuke.Core Vulnerable to Stored XSS via Module Title
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem.
CVSS 9.1 Critical EPSS 0.2% · p12
Should you act?
Critical, preconditions apply
Severe if exploited, but exploitation needs conditions that may not apply to you. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.2%, percentile 12: FIRST’s model estimates a 0.2% chance of exploitation activity in the next 30 days, higher than 12% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs an account (high (admin)). Exposure depends on who can log in.
- Only applies if your dependency tree includes
DotNetNuke.Core(NuGet) < 9.13.10, fixed in 9.13.10;DotNetNuke.Core(NuGet) >= 10.0.0, < 10.2.0, fixed in 10.2.0. Check your lockfile, including transitive dependencies.
What it is
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to versions 9.13.10 and 10.2.0, module title supports richtext which could include scripts that would execute in certain scenarios. Versions 9.13.10 and 10.2.0 contain a fix for the issue.
From the GitHub advisory
Module title supports richtext which could include scripts that would execute in certain scenarios.
Weakness type: CWE-79.
Product: DotNetNuke.Core (NuGet) · Assigned by: GitHub_M · Published: 2026-01-27
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| NuGet | DotNetNuke.Core | < 9.13.10 | 9.13.10 |
| NuGet | DotNetNuke.Core | >= 10.0.0, < 10.2.0 | 10.2.0 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| dnnsoftware | Dnn.Platform | < 9.13.10, >= 10.0.0, < 10.2.0 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_M | 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
| GitHub | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: high (admin)
- User interaction: none
- Scope: changed (can affect other components)
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none, automatable no, technical impact total.
- FIRST EPSS (model of 2026-10-21): 0.22% probability of exploitation activity in the next 30 days; percentile 12.
Timeline
- — CVE record published by GitHub_M
- — CVE record last updated
- — GitHub-reviewed advisory GHSA-w9pf-h6m6-v89h published (critical)
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-w9pf-h6m6-v89h github.com
- CVE.org record CVE-2026-24838 cve.org
- NVD entry CVE-2026-24838 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com
- github.com github.com
- github.com github.com