'Chaining vulnerabilities is the hallmark of a sophisticated attack': 750,000 websites must be patched as Microsoft's popular open source Dotnetnuke CMS hit by an XSS flaw that allows attackers to hijack admin sessions and take over entire web servers

A critical DotNetNuke vulnerability allows attackers to upload malicious SVG files, execute XSS, and gain server control through authenticated user actions.

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 Apr 30, 2026  0  0
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'Chaining vulnerabilities is the hallmark of a sophisticated attack': 750,000 websites must be patched as Microsoft's popular open source Dotnetnuke CMS hit by an XSS flaw that allows attackers to hijack admin sessions and take over entire web servers
A critical DotNetNuke vulnerability allows attackers to upload malicious SVG files, execute XSS, and gain server control through authenticated user actions.
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