CVE-2021-40186

Public Exploit

DNN CMS Server-Side Request Forgery (SSRF)

Description

The AppCheck research team identified a Server-Side Request Forgery (SSRF) vulnerability within the DNN CMS platform, formerly known as DotNetNuke. SSRF vulnerabilities allow the attacker to exploit the target system to make network requests on their behalf, allowing a range of possible attacks. In the most common scenario, the attacker exploits SSRF vulnerabilities to attack systems behind the firewall and access sensitive information from Cloud Provider metadata services.

References

Link	Tags
https://appcheck-ng.com/dnn-cms-server-side-request-forgery-cve-2021-40186	third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-40186?: CVE-2021-40186 has been scored as a medium severity vulnerability.
How to fix CVE-2021-40186?: To fix CVE-2021-40186, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-40186 being actively exploited in the wild?: It is possible that CVE-2021-40186 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-40186?: CVE-2021-40186 affects DNNSoftware DNN Platform.

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Description

Category

CWE-918 – Server-Side Request Forgery (SSRF)

References

Frequently Asked Questions