pentester.land· May 26, 2022· by Appcheck NG🔍 CVE-2021-40186

DNN CMS Server-Side Request Forgery (CVE-2021-40186)

Target Program: DNN (DotNetNuke)

🎯 Vulnerability: Server-Side Request Forgery (SSRF)

💡 Defense Fix: Enforce URL whitelisting, block private IP ranges (10.0.0.0/8, 169.254.169.254), and mandate AWS IMDSv2 headers.

#SSRF#Security code review#CVE-2021-40186