DNN (aka DotNetNuke) 9.2 through 9.2.2 uses a weak encryption algorithm to protect input parameters. NOTE: this issue exists because of an incomplete fix for CVE-2018-15811.
References:- https://nvd.nist.gov/vuln/detail/CVE-2018-18325
- 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
- https://github.com/advisories/GHSA-j3g9-6fx5-gjv7