CVE-2021-43853
HIGHAjax.NET Professional < 21.12.22.1 - JavaScript Object Injection via JSON Parsing
Title source: llmDescription
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.
References (3)
Core 3
Core References
Mitigation, Third Party Advisory x_refsource_confirm
https://github.com/michaelschwarz/Ajax.NET-Professional/security/advisories/GHSA-5q7q-qqw2-hjq7
Patch, Third Party Advisory x_refsource_misc
https://github.com/michaelschwarz/Ajax.NET-Professional/commit/c89e39b9679fcb8ab6644fe21cc7e652cb615e2b
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/michaelschwarz/Ajax.NET-Professional/releases/tag/v21.12.22.1
Scores
CVSS v3
8.7
EPSS
0.0024
EPSS Percentile
46.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Details
CWE
CWE-502
CWE-79
Status
published
Products (2)
ajax.net_professional_project/ajax.net_professional
< 21.12.22.1
nuget/AjaxNetProfessional
0 - 21.12.22.1NuGet
Published
Dec 22, 2021
Tracked Since
Feb 18, 2026