CyberRota Analysis
AI-GeneratedVersions of justhtml prior to 1.12.0 are vulnerable to a mutation cross-site scripting (mXSS) flaw that allows attackers to inject arbitrary HTML by exploiting improperly serialized raw-text elements like `<style>` and `<script>`. This vulnerability arises when custom sanitization policies retain these elements, enabling the execution of malicious scripts. Developers and security teams using affected versions should prioritize patching to mitigate potential exploitation risks.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
justhtml before 1.12.0 (versions <= 1.11.0) contains a mutation cross-site scripting (mXSS) vulnerability in the serialization of raw-text elements such as <style> and <script>. When a DOM tree is processed by sanitize_dom() using a custom policy that keeps these elements, text nodes inside them are serialized literally without escaping, allowing attacker-controlled text containing the matching closing tag sequence to break out of the raw-text context and inject arbitrary HTML into the serialized output. The default sanitization policy is not affected because it drops the contents of style and script.