CyberRota Analysis
AI-GeneratedThe HTML5 scrubber in rrrene's html_sanitize_ex is vulnerable to an open redirect issue, allowing unauthenticated remote attackers to manipulate existing forms on a page, potentially capturing sensitive user submissions, including credentials. This vulnerability arises from inadequate checks on the formaction and form attributes, enabling attackers to redirect submissions to untrusted sites. Organizations using versions from 0.3.1 to before 1.5.3 should prioritize remediation to protect user data and maintain security integrity.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
URL Redirection to Untrusted Site ('Open Redirect') vulnerability in the HTML5 scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to retarget a form already on the rendering page and receive whatever the victim submits, including credentials, via the form and formaction attributes on an <input> element in sanitized HTML. HTML's form attribute associates an input with any form on the page by its id even when the input sits outside that form, and formaction on a submit control overrides the owning form's action. Neither attribute receives a scheme check, so an absolute cross-origin URL survives sanitizing. No script executes. The scrubber allows neither form nor button, so the attacker cannot introduce a form of their own and the rendering page must already contain a form carrying an id. This issue affects html_sanitize_ex: from 0.3.1 before 1.5.3.
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