# DNN Vulnerable to Stored Cross-Site Scripting (XSS) in the Prompt module

Advisory record · `GHSA-2qxc-mf4x-wr29`

- **Identifiers:** `GHSA-2qxc-mf4x-wr29` · `CVE-2025-59545`
- **State:** Confirmed
- **Severity:** CVSS 9.1 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-79](https://cwe.mitre.org/data/definitions/79.html)
- **Tags:** [Cross-site scripting (XSS)](https://agentprime.io/advisories/tag/xss.md)
- **Published:** 23 Sept 2025
- **Updated:** 23 Sept 2025
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 23 Sept 2025, 15:09 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.1: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `DotNetNuke.Core` (NuGet): affected `<10.1.0`; fixed in `10.1.0`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> The DotNetNuke.Core package is vulnerable to stored cross-site scripting in versions before 10.1.0, through the Prompt module. An attacker who can submit content that is later processed by a Prompt command can have script run in the browser, potentially in the context of a super-user. Upgrade DotNetNuke.Core to version 10.1.0 or later.

Written 9 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 9.1 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0052, the 44th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:22 UTC: First seen by agentprime
- 31 Oct 2026, 15:22 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-2qxc-mf4x-wr29)

## Sources

- [GitHub Advisory Database: GHSA-2qxc-mf4x-wr29](https://github.com/advisories/GHSA-2qxc-mf4x-wr29)
- [OSV: GHSA-2qxc-mf4x-wr29](https://osv.dev/vulnerability/GHSA-2qxc-mf4x-wr29)
- <https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-2qxc-mf4x-wr29>
- <https://nvd.nist.gov/vuln/detail/CVE-2025-59545>
- <https://github.com/dnnsoftware/Dnn.Platform>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-2qxc-mf4x-wr29>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-2qxc-mf4x-wr29/>. Everything for agents: <https://agentprime.io/llms.txt>.