CVE-2021-43853
8.7 · HIGHOverview
CVE-2021-43853 is a high-severity vulnerability affecting ajax.net_professional_project ajax.net_professional. It was published on December 22, 2021 and has a CVSS 3.1 base score of 8.7 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Ajax.NET Professional (AjaxPro) is an AJAX framework available for Microsoft ASP.NET. Affected versions of this package are vulnerable to JavaScript object injection which may result in cross site scripting when leveraged by a malicious user. The affected core relates to JavaScript object creation when parsing json input. Releases before version 21.12.22.1 are affected. A workaround exists that replaces one of the core JavaScript files embedded in the library. See the GHSA-5q7q-qqw2-hjq7 for workaround details.
Remediation
Check the references section for vendor advisories and patches from ajax.net_professional_project. Update ajax.net_professional to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| ajax.net_professional_project | ajax.net_professional | >= 0, < 21.12.22.1 | Affected |
References
Frequently Asked Questions
What is CVE-2021-43853?
CVE-2021-43853 is a high-severity vulnerability affecting ajax.net_professional_project ajax.net_professional. It was published on December 22, 2021 and has a CVSS 3.1 base score of 8.7 (HIGH).
How severe is CVE-2021-43853?
This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-43853?
Check the references section for vendor advisories and patches from ajax.net_professional_project. Update ajax.net_professional to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-43853?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-43853 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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